PD 06-31 USMC TW Combat Boot 6 NOV 2023 .pdf

CR/PD 06-31

CR-PD 06-31

6 Nov 2023

1. SCOPE

PURCHASE DESCRIPTION

MARINE CORPS COMBAT BOOT, TEMPERATE WEATHER

1.1 Scope. This document covers the requirements of a United States Marine Corps (USMC) Temperate Weather Combat Boot, for use in temperate wet and dry environments from 20 to 60 degrees F (-6 to 15 degrees C) weighing 2.10 pounds per boot for a Men’s Size 10R and weighing less than 1.80 pounds per boot for a women’s size 8RF. The boot shall be of one type with a partial speed lace closure system with lace to toe or open toe design with flex “V- notch,” and removable cushioned inserts. The boot leather shall be breathable, waterproof, mildew resistant, USMC Coyote color 476/498. The boot shall have nylon quarters, bootie lining, closed cell comfort collar, a backstay, and ankle reinforcement straps with a replaceable rubber outsole and cushion midsole. (See Figure 2A & 2B) The outside leather areas should be flesh out for Class I Leather. (See 1.2.1). The USMC Temperate Weather Combat boot shall be manufactured using DMS, Welt, Stitchdown, or the injected molded process and shall be capable of being resoled through its lifecycle, given that the upper is in good condition. Unless otherwise indicated, all performance requirements called out in this specification pertain to an item made on a size 10R men’s last or an 8RF women’s last. The design and pattern must follow the example provided in Figures 2A and 2B.

1.2 Classification. The boots for men shall be in the following whole and half sizes: 3 through 15 inclusive, and whole size 16, in the following widths: N, R, W, XW, (B, D, EE, EEEE). The boots for women shall be in the following whole and half sizes: 5 through 9 inclusive, and whole sizes: 4, 10, and 11, in widths of R, W (D, EE), and in size 4.5R. Women’ s sizes will contain an “F” to differentiate them from the men’s boot (ex. Men’s: 10R, Women’s: 8RF). See paragraph 6.1.

1.2.1 Class: The classes of Temperate Weather Combat boots are as follows:

Class I: Cattle hide Upper Leather

AMSC N/A FSC 8430

FSC 8435

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Defense Supply Center Philadelphia, Clothing and Textiles Directorate, Attn: DSCP-CRFD, Bldg. 6D, 700 Robbins Avenue, Philadelphia, PA 19111-5096, by using the Standardization Document Improvement Proposal (DD Form 1426), or by letter.

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification.

This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2).

SPECIFICATIONS

COMMERCIAL ITEM DESCRIPTIONS

A-A- 55093 - Laces, Nylon

MILITARY

MIL-PRF-3122K -Leather, Cattlehide, for Footwear for Uppers and Gussets, Chrome

Tanned, Fatliquored MIL-C-41814F -Counter, Footwear

DRAWINGS

DEFENSE SUPPLY CENTER-PHILADELPHIA

2-1-1635 -Speed Lace Assembly

(Copies of drawings are available from the Defense Supply Center-Philadelphia, 700 Robbins Avenue, Philadelphia, PA 19111-5096, Attn: DSCP-CRFD-TDR.)

2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues shall be those cited in the solicitation or contract.

FEDERAL TRADE COMMISSION

RULES AND REGULATIONS UNDER THE TEXTILE FIBER PRODUCTS IDENTIFICATION ACT

(Copies may be obtained without charge from the Federal Trade Commission, Washington, DC

20580-0001.)

2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents are those cited in the solicitation or contract (see 6.2).

TECHNICAL MANUAL OF THE AMERICAN ASSOCIATION OF TEXTILE CHEMISTS AND

COLORISTS

Association of Textile Chemists and Colorists (AATCC) Evaluation Procedure 1, Gray Scale for Color Change AATCC Evaluation Procedure 2, Gray Scale for Staining AATCC Evaluation Procedure 8, AATCC 9-Step Chromatic Transference Scale AATCC Evaluation Procedure 9, Visual Assessment of Color Difference of Textiles AATCC 119 - Color Change due to Flat Abrasion (Frosting): Screen AATCC 127 - Water Resistance: Hydrostatic Pressure Test AATCC 22 - Water Repellency: Spray Test

(Applications for copies should be addressed to the AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709-2215.)

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM-D-297 - Rubber Products-Chemical Analysis ASTM-D-412 - Vulcanized Rubber and Thermoplastic Elastomers (Tension Elongation) ASTM-D-471 - Rubber Property-Effect of Liquids ASTM-D-624 - Tear Strength of Conventional Vulcanized Rubber and Thermoplastic

Elastomers ASTM-D-751 - Coated Fabrics (Hydrostatic Resistance or Breaking Strength) ASTM-D-792 - Density and Specific Gravity (Relative Density) of Plastics by Displacement ASTM-D-816 - Rubber Cements ASTM-D-1052 - Measuring Rubber Deterioration-Cut Growth Using Ross Flexing

Apparatus ASTM-D-1055 - Specifications for Flexible Cellular Materials-Latex Foam ASTM-D-1630 - Rubber Property-Abrasion Resistance (Footwear Abrader) ASTM-D-1777 - Thickness of Textile Materials ASTM-D-2208 - Breaking Force and Elongation, Grab Method ASTM-D-2240 - Rubber Property-Durometer Hardness ASTM-D-3273 - Resistance to Growth of Mold ASTM-D-3574 - Flexible Cellular Materials- Slab, Bonded, and Molded Urethane Foams ASTM-D-3575 - Compression Set of Cushion Materials ASTM-D-3787 - Bursting Strength of Textiles Constant-Rate-of-Traverse (CRT)

Ball Burst Test ASTM-D-3886 - Abrasion Resistance for Textile Fabrics (Inflated Diaphragm

Apparatus) ASTM-D-4786 - Stitch Tear Strength, Single Hole ASTM-D-4966 - Abrasion Resistance of Textile Fabrics

(Martindale Abrasion Tester Method) ASTM-E-18 - Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials ASTM-E-96 - Water Vapor Transmission of Materials ASTM-F-392 - Flex Durability of Flexible Barrier Materials ASTM-F-1614 - Shock Attenuating Properties of Material Systems for Athletic Footwear

(Copies of documents are available online at www.astm.org or from the ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19426-2959.)

AMERICAN SOCIETY FOR QUALITY

ANSI/ASQC Z1.4 -Sampling Procedures and Tables for Inspection by Attributes

(Applications for copies should be addressed to the American Society for Quality Control, P.O.

Box 3005, 611 East Wisconsin Avenue, Milwaukee, WI 53201-4606.)

PI T451cm-84 -Clark Stiffness

(Applications for copies should be addressed to the Technical Association of the Pulp and Paper Industry (TAPPI), P.O. Box 105113, Atlanta, GA 30348.)

SATRA FOOTWEAR TECHNOLOGY MILITARY TEST METHODS (MTM)

MTM-2 - Tensile Strength of Fiberboards and Sheet Insoling Materials MTM-3 - Flexing Endurance Test for Fiberboards MTM-14 -Resistance to Scuffing by Mild Circular Abrasion of Fiberboards MTM-31 - Abrasion Resistance-Martindale Method MTM-33 -Seam Fray MTM-64 -Compression Set MTM-77 -Flexing Machine- Water Penetration Test MTM-80 -Transverse or Z Direction Tensile Strength of Sheet Materials MTM-98 - Dimensional Stability with Changes in Atmospheric Humidity MTM-101 -Surface Peel Strength of Insole Materials MTM-223 -Non-marking (rubber outsole) MTM-363 -Whole Shoe Flexing Machine (Special – High Water Level) MTM-404 -Rapid Sole Adhesion Test: For Complete Footwear MTM-405 -Determination of Sheer and Peel of Insole Ribs

STD-185/S or 185 - Sole Adhesion Tester TM-31 - Abrasion Resistance TM-83 - Measurement of the Area Shape Retention and Collapsing Load of

Formed Toe Puff and Stiffener Materials

(Applications for copies of SATRA Test Methods should be addressed to: SATRA Technology Center, SATRA House; Rockingham Road, Kettering, Northamptonshire; NN 16 9 JH, England.)

(Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services.)

2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

http://www.astm.org/

3. REQUIREMENTS

3.1 First article. When specified (see paragraph 6.2) samples shall be subjected to first article testing and first article inspection (see paragraph 6.3) in accordance with paragraph 4.4.

3.2 Materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. Materials used in the production of this item shall be of standard commercial practice, and shall be modified, if necessary, in order to meet the needs of Marines in the environment for which the item is intended. Materials used to produce this item shall prevent fungal/bacterial infestation, reduce foot odor, and be non-hazardous to the user. These traits in the chosen materials shall be permanent. The quality and workmanship of the item is expected to exceed that found in the commercial market, given the environment for which the item is intended. It is expected that all materials used to meet the Purchase Description will hold up under the extreme conditions found in the Field and Garrison temperate environments. Materials should be selected to optimize the overall boot performance for the given environment, not specifically address a single measure of performance (i.e., weight, comfort, shock attenuation, water absorption, etc.). All materials visible to the wearer shall match the color of the leather. Materials used in the upper shall be treated for waterproofness and shall not absorb or wick moisture into the boot. Component materials shall not vary in their color or appearance. Materials shall be free of non-removable spots, stains, or other foreign matter affecting appearance.

3.2.1 Weight. The weight of the entire end product shall not exceed 2.10 pounds (dry) for a men’s boot made on a Men’s Size 10R last and shall not exceed 1.80 pounds (dry) for a women’s boot made on a women’s size 8RF last. The weight of the boot when saturated with water shall be minimized through materials and construction technique. Materials selected to accomplish this end item weight must meet durability requirements of the U.S. Marine Corps. Materials that trade weight for durability or overall performance are not in the best interest of the U.S. Marine Corps.

3.2.2 Height. The height of the men’s boot shall be between 8.5 and 9.0 inches, while the women’s boot shall be between 8.0 and 8.5 inches from the feather line to the top of the boot at its tallest point, so that users are protected from the elements and provided with biomechanical support. The height shall be graded up and down between sizes and widths appropriately to minimize the interference with the calf musculature. The overall height of the boot shall include the comfort collar. Height shall not vary between boots of a pair by more than ¼ (0.25) inch.

3.2.3 Shock Attenuation. Shock Attenuation (as measured IAW ASTM F1614) shall be optimized for user comfort and injury reduction. Peak Acceleration (Peak g) shall not exceed 18.00g in the Forefoot or 14.00g in the Rearfoot. Shock attenuation shall be achieved through the choice of standard materials and construction techniques used in commercial industry and found in this Purchase Description. Human biomechanical gait parameters while wearing combat boots shall not be compromised to achieve increased shock attenuation. Requirements for shock attenuation will be tested in the end item as specified in Table XV. A Certificate of Compliance will be acceptable for the stated requirements.

3.2.4 Forefoot Flexibility. Longitudinal forefoot flexibility shall be optimized such that normal gait patterns are minimally disturbed, and risk of increased injury is minimized. Torsional flexibility shall be optimized to allow normal range of motion and mediolateral stability during gait (loaded and unloaded) and prevent overpronation.

3.2.5 Water Absorption and Drying. Materials selected for use in this item shall be such that water absorption (and thus weight gain) is minimized, and time to completely dry, once saturated, is minimized.

Component materials used on the exterior of the boot shall be treated to prevent moisture wicking inside the boot. Materials selected to accomplish this end item performance must meet field durability requirements of the U.S. Marine Corps. Materials that trade water absorption and drying time for durability or overall performance are not in the best interest of the U.S. Marine Corps.

3.2.6 Whole Boot Moisture Vapor Transmission Rate (MVTR). The whole boot breathability shall not be less than 3.0 grams/hour when tested in accordance with paragraph 4.9.3.

3.2.7 Temperature, Environment, and Material Weathering. Materials selected for use in this item shall perform equally well in the field environment for the life of the item. The temperature ranges that can be expected for this item are 25 degrees F – 60 degrees F. Humidity ranges that can be expected for this item are 0% - 100%. Exposure to UVA / UVB wavelengths shall not interfere with the material performance or color of the item/component. Immersion in salt water shall minimally affect end item/ component performance. Items will be expected to optimally perform with consistent exposure to the above conditions.

3.2.8 Field Life /Shelf Life. Shelf life for the USMC Temperate Weather Combat Boot shall be no less than 10 years when stored for future use by the U.S. Military. Field life shall be no less than 365 days under normal conditions by Marines in the Field and/or Garrison environments.

3.2.9 Standard sample. The standard sample for color shade and sueded flesh appearance shall be a swatch of Coyote color 476/498.

3.2.10 Visual shade matching (components). Any component referencing matching the standard shade and appearance in 3.2.9 shall be viewed using AATCC Evaluation Procedure 9, Option A, under filtered tungsten lamps that approximate artificial daylight D75 illuminant with a color temperature of 7500 + 200 K, with illumination of 100 + 20 foot candles and shall be a good match to the standard sample under horizon lamplight at 2300 + 200 K.

3.3 Leather.

3.3.1 Upper leather.

3.3.1.1 Cattle hide. The leather shall be breathable, waterproof, flesh out, mildew resistant. Coyote color 476/498 The leather shall be flesh out drum dyed Coyote with color penetrating throughout the thickness of the hide so that the chrome tannage is not visible. The leather for the vamps, outside counter pockets and eyelet stays shall conform to MIL-PRF-3122K, Type I, Treatments A and B.

The thickness shall be as specified in Table IX. The water resistance requirement shall be at least 80% of the specimens shall withstand not less than 25,000 cycles and water absorption shall not be greater than 30% at 25,000 flexes by ASTM D2099. Tearing Strength (slit tear) requirement shall be at least 80% of the specimens tested shall have a tearing strength value of 17 lbs. or more. No specimens shall be below 12 lbs. The fungicide treatment shall be tested and meet the requirements of one of the test methods listed in 3.3.1.3. The leather for the front edge eyelet stays shall conform to MIL-PRF-3122K, Type II, Treatment A. The following exceptions to MIL-PRF-3122K shall be applicable for the upper leathers:

a. The flesh surface shall be sueded to produce a fine uniform nap.

b. The grain surface shall be lightly buffed to remove the surface of the grain only.

c. The finish requirements for the leather shall not apply.

d. The thickness shall be as specified for the cut parts in Table IX.

e. As an option, the eyelet stays may conform to MIL-PRF-3122K, Type I, Treatment A and Treatment B.

f. Front edge eyelet stays to match with the part description in the paragraph above this item.

3.4 Insoles. The insole shall meet the requirements specified in Table I. A Certificate of Compliance shall be submitted and will be acceptable for the stated requirements.

Table I. Insole Performance Requirements

Characteristics Physical Requirements Test Method Thickness

Welt Construction 0.095 +/- 0.010 inch ASTM-D-1777 1/ DMS Construction / Injected Molded Construction

0.145 +/- 0.021 inch

Min – 0.095

ASTM-D-1777 1/

Fungal resistance Level 10 ASTM-D-3273 Wet Tensile 70 kgf/cm2 min. SATRA MTM-2 Flexing Index 3.7 (5000 cycles) min. SATRA MTM-3 Abrasion Resistance

Cellulose board 50mm3 max. SATRA MTM-14 Non-Woven board 25,600 revs dry/6400 wet

(min.)

SATRA MTM-31

Transverse Tensile-Dry 8 kgf/cm2 min. SATRA MTM-80 Dimensional Stability 0.7% max. SATRA MTM-98 Peel Strength 0.5 kgf/cm2 min. SATRA MTM-101

1/ A thickness gauge of the dead-weight type equipped with a dial graduated to read directly to 0.001 inches shall be used. The presser foot shall be circular, with a diameter of 1.129 (+/- 0.001) inches and with moving parts weighted to apply a total load of 0.60 (+/- 0.03) pounds per square inch (psi) to the specimen. The anvil shall be not less than 1.129 inches in diameter. The presser foot and anvil surface shall be paned to within 0.001 inches and shall be parallel to each other to within 0.001 inches.

2/ The specimens shall show no holes through the full thickness after the specified number of revolutions.

3.5 Fabrics.

3.5.1 Gusset and Quarter side panels. The gusset and quarter side panels shall be 100% nylon 6,6 or equal; 2x2 basket weave; 140 filaments per inch of 1,000 denier in both warp and filling direction;

approximating the Coyote color 476/498; weighing 13.7 (+/- 1.3) oz/sq yd. The material shall be fungal resistant, extremely water resistant, non-wicking, and backed with a polytetrafluorethylene, microporous membrane. The two-layer material shall conform to the physical requirements listed in Table II when tested as specified in paragraph 4.6.2. The tear strength of the material shall be such that normal Marine use and wear does not cause undue damage to the quarter panels. Construction of the end item shall be such that the seam strength between the 1000-denier nylon and all other components (i.e., backstrap, ankle reinforcements, and binding tape) is adequate for the life of the item. The top of the backstay shall be folded over the quarter side panels, stitched, and shall have a clean, finished appearance. The stitching shall be durable and extend the life of the item. A minimum of two rows of stitching are required around the eye stay wedge and ankle area for increased support in accordance with Figures 2A and 2B.

3.5.1.2 Thread, nylon. The thread shall be nylon, conforming to type I, II or III, class A or B, size E of V-T-295. The thread shall be conformed to the shade of the standard sample of Coyote.

Colorfastness requirements shall not apply. The maximum thread elongation for all thread shall be 32 percent. Testing shall be as specified in 4.8.

Table II. Gusset and Quarter Side Panel Requirements

Component Characteristics Requirement Test Method

Gusset And Quarter Side Panels

MVTR

(breathability)

80% not less than 500 gm/m2 /24hrs.

ASTM E96 (B)

Water Repellency

90 (IS04) AATCC Method 22

3.5.2 Bootie lining. The bootie lining shall be constructed from pattern pieces cut from waterproof 3-layer laminate material.

3.5.2.1 Three-layer laminate. The three-layer laminate lining shall consist of a textile face, a waterproof film, and a tricot knit cloth. The package shall conform to the requirements in paragraphs 3.5.2.2, 3.5.2.3, and 3.5.2.4. The three-layer laminate shall conform to the requirements specified in Table III, when tested as specified in paragraph 4.6.2.

3.5.2.2 Face layer. The package shall consist of a textile face that meets the Martindale Abrasion and Burst Strength performance criteria listed in Table III. The color of the Face Layer fabric will be approximately Coyote-colored herringbone, or equal based on Government approval.

3.5.2.3 Waterproof film. The waterproof film shall be polytetrafluorethylene, micro porous.

3.5.2.4 Tricot knit. The tricot knit cloth shall be nylon weighing a minimum of 1.0 oz/yd 2 and meet the requirements in Table III when tested as part of the three-layer laminate lining as specified in

4.6.2. The color shall be natural.

3.5.2.5 Adhesive. The adhesive for laminating the layers together shall be such that the laminate cloth will meet the requirements of this specification. The adhesive shall have no adverse health hazard when used as intended.

3.5.2.6 Laminated cloth. The single layer package specified in paragraph 3.5.2.1 shall be laminated to one side of the waterproof film and the tricot knit cloth shall be laminated to the other side of the waterproof film. The face side of the laminate cloth shall be the side with the single layer package.

The three-layer laminate cloth (specified in 3.5.2.1) shall conform to the requirements specified in Table III, when tested as specified in paragraph 4.6.2.

Table III. Laminated Cloth Performance Requirements

Characteristics Requirements Test Method Martindale Abrasion

Fabric Only; Dry 153,600 revs/ 9,600 cycles (min) ASTM 4966 1/ Bursting Strength

Fabric Only 125 (min) ASTM 3787 Hydrostatic Resistance (psi)

Liner cloth (initial) 50 (min) ASTM D751 2/ At Seam 50 (min) ASTM D751 3/ After Synthetic Perspiration 50 (min) ASTM D751 4,5,6/ After Diesel Fuel Oil 50 (min) ASTM D751 7,6/

Water Permeability/ Resistance Liner cloth (initial) No leakage AATCC 127 8/ At Seam No leakage AATCC 127 9,8/ After Synthetic Perspiration No leakage AATCC 127 10,5,6,8/ After Diesel Fuel Oil No leakage AATCC 127 11,6,8/

Abrasive Durability (cycles to leak) Back / Leather Side 600 cycles, No leakage ASTM D3886/

AATCC 127 12,8/

Moisture Vapor Transmission Rate (g/m2/24hrs)

B method 640 (min) ASTM E96 13/ BW method 4,000 (min) ASTM E96 14/

Flex Durability Gelbo (cycles to leak) 3,000 cycles, No leakage ASTM F392/

AATCC 127 15,8/

Wet (hrs. to leak) 24 (min) ASTM F392/

AATCC 127 16, 8/

/Footnotes for Table II Test Methods found after Table X.

3.5.3 Binding tape. Binding tape shall be used on all exposed edges of the 1000 denier nylon material and shall approximate the USMC Coyote color 476/498. The binding tape shall be bound to the nylon fabric for the life of the item and shall not affect Marine footwear comfort or overall item performance. The material shall be treated to eliminate moisture wicking.

3.6 Color. The color of the face side of the laminated cloth shall approximate the Coyote color 476/498 or equal, based on Government approval.

3.7 Fabric Liner for Cushioned Insert. The cloth used for the fabric top cover on the cushioned inserts shall conform to the performance requirements criteria of Martindale Abrasion and Bursting Strength as listed in Table VIII.

3.8 Comfort Collar. The top band shall have a length equal to the circumference of the boot top exclusive of the gusset and tongue and shall provide the necessary padding for user comfort. The band width should be of equal height around the top of the boot as presented in Figure 2A and 2B.

The closed- cell foam padding shall not absorb liquids, shall not be susceptible to hydrolysis, shall have a compression set such that comfort is provided for the life of the item, and shall not promote fungal or bacterial growth.

3.9 Box toe. The box toe material shall be a laminate of 0.020 (+/- 0.002) inch virgin ionomer resin (surlyn) sandwiched between two layers of non-woven polyester saturated with polystyrene. The total thickness shall be 0.056 (+/- 0.005) inch. The box toes shall be skived 3/8 (+/- 1/8) inch wide at the breast. A Certificate of Compliance shall be submitted and will be acceptable for testing/inspection requirements. Testing shall be as specified in 4.6.2. A thermoplastic box toe may be used and shall conform to the performance requirements of Table V as was in the 2012 version of this PD.

3.10 Counters. The boot shall be constructed such that the counters minimize "hot spots" or blisters to the user. The counter shall conform to fit the last used and fill the counter pocket area. The counters shall have a thickness of 0.090 (+/- .010) inches and shall conform to the physical requirements listed in Table IV when tested as specified in paragraph 4.9.4. Skiving of the counters shall be in accordance with commercial practice. The top of the counter pocket shall not be skived. The physical requirement for single hole tear strength of MIL-C-41814 is eliminated. As an alternative, counters manufactured from leather board need not meet the chemical requirements of MIL-C-41814 but must meet the fungicide requirements of MIL-PRF-3122K. A Certificate of Compliance shall be submitted and will be acceptable for testing/inspection requirements.

An extruded thermoplastic film sandwiched between fusion bonded non-woven fabric made from a blend of synthetic fibers and impregnated with a styrene copalmer and coated on each side with a thermoplastic adhesive may be used. The total thickness shall be 0.79 to 0.83 inches. A thermoplastic counter may be used and shall conform to the performance requirements of Table V. A certificate of compliance shall be submitted and will be acceptable for the stated requirements.

Table IV. Counter Requirements (Para 4.9.4)

Characteristics Minimum Maximum Crush Resistance 8% 35% Tear Strength (Wet) 30% - (Single Hole) - Water Absorption - 40% Water Soluble - 0.05% Disintegration - 1.25% NOTE: Single hole tear strength not applicable to DMS construction.

Table V. Thermoplastic Performance Requirements

Characteristics Physical Requirements Initial Collapsing Load (N) >130 N Resilience (%) 25% min Moisture Resistance (%) 80% min Area Shape Retention (%)

Initial 85% min 10th collapse 60% min

1/ Resilience is percentage retention of initial collapsing load after ten collapses.

2/ Moisture resistance is percentage retention of initial dry collapsing load after 1 hour immersion.

3.11 Shank. The fiberglass shanks shall be bonded to the insole and shall conform to the shape of the last.

The fiberglass shank (glass and resin area), when cured, shall be 5/8 (+/- 1/16) inch in width. The shank shall be made with two ribs for the 5/8 inch width and three ribs for the 1 inch width. A Certificate of Compliance shall be submitted and will be acceptable for the testing requirements. Testing shall be as specified in 4.6.2.

3.12 Eyelets and Speed Laces. The eyelets and speed laces shall be brass with a Coyote coated finish, which is durable enough to remain on the eyelets and speed laces for the life of the item. The eyelets and speed laces shall not rust, tarnish, or otherwise change the subdued finish color for the life of the item when exposed to the environment indicated in paragraph 3.23.4. Eyelet and Speedlace attachment shall be such that they remain permanently fixed to the upper through the life of the item. Adjustments shall be made such that all sizes allow users to easily utilize the speed lace system, and proper closure of the item is achieved. Speed laces and eyelets shall be equally spaced on the eyelet stays to allow proper lacing and cinching of the boot for donning and doffing and shall have the same alignment between both rows. The bottom eyelets shall be placed in a position on the foot such that they do not cause hot spots, blisters, or other irritation. Testing shall be as specified in 4.6.2.

3.13 Quarter foam. There shall be opened cell quarter foam, 3/16 (± 1/32) inch thick, located next to the bootie lining. The foam shall cover the counter area and extend upward to within two inches from the top of the boot.

3.14 Bottoming. The bond achieved between the boot upper, solid midsole, cushion midsole, and outsole shall be resistant to any delamination for the life of the item. Bottoming shall be optimized to reduce wear on the outsole, increase shock attenuation, and shall not negatively affect the overall comfort of the item. Overall height of the bottoming, from the true feather line to the bottom of the outsole, shall not negatively affect overall item performance, user performance, or natural gait biomechanics. Bottoming must match the upper material color of Coyote. Bottoming must be durable enough to withstand standard use by Marines in a Field and Garrison environment while executing combat training and operations. The thickness of bottoming components shall be uniform between and within pairs. Edge scouring of the rubber outsole shall be smooth and regular for quality appearance. No bottoming component shall be malformed, contain air pockets, or contain wrinkles.

3.14.1 Midsole. The midsole for use with stitchdown, and welt constructions shall be 4

(-1/2 + 1 iron), Coyote color 476/498, oil resistant, and it shall meet the requirements of Table VI.

The DMS construction midsole (base sole) shall be ¼ (+/- 1/16) inch, measured from the top of welt line to the bottom of the midsole.

3.14.2 Solid Midsole. The rubber midsole for use with welt, stitchdown and littleway constructions shall be 4 ± 1/2 iron, and oil resistant. The DMS construction rubber midsole (base sole) shall be 1/4 ± 1/16 inch, measured from the top of welt line to the bottom of the solid midsole. The midsole shall be Coyote in color matching the standard sample (see 3.2.9). Testing shall be as specified in 4.6.2.

3.14.3 Cushioned Midsole. The midsole shall provide the necessary stability, durability, and seek to increase the overall performance of the item by optimizing the performance called out in this specification (i.e., Weight, Shock Attenuation, etc.) and meet the requirements specified below in paragraph 3.14.3.1 and in Table VI. The cushion midsole shall be Coyote in color matching the standard sample and conform to the shade of the upper.

3.14.3.1 Polyether polyurethane requirements. The requirements for the midsole are based on testing done on slabs (according to ASTM procedures) and are not actual soles. The compound should be able to endure a minimum shelf life as listed in paragraph 3.2.8. The requirements shall be as specified in Table VI. A Certificate of Compliance shall be submitted and will be acceptable for the stated requirements.

(See 4.6.2)

Table VI. Polyether Polyurethane Requirements

Characteristics Minimum Maximum Test Method Density (gm/cc) 0.50 0.60 ASTM-D-297 Hardness (shore A) 50 75 ASTM-D-2240 Tensile strength (kgf/cm sq) 25 - ASTM-D-3574 Elongation (%) 350 - ASTM-D-3574 Tear strength- Die T (kg/cm) 3.7 - ASTM-D-3574 Volume swell (%) w/ ASTM Oil #3 (at 24 hrs.)

ASTM-D-471

Compression Set % - 20 SATRA MTM-64 Ross flex (1x6 inch) at -5C 900% @

150,000 cycles

- ASTM-D-1052 1/2

1/ Test method modified to include 2.0 MM insole board glued onto the specimen and conducted at –5 degrees C. The specimen shall not be heat aged prior to test and shall be of the thickness specified in ASTM D1052 before laminating to the insole board.

2/ A 2.0 MM insole board bonded to the flex sample may be used.

3.14.4 Outsole. The outsole design shall be the Coyote color 476/498 Quabaug Vibram Sierra 1276 design (see Figure 3) or alternate approved design with equivalent durability. The outsole shall be a minimum of 18-iron (9.5mm) in thickness of solid rubber at each of the lugs. The tread pattern shall maximize traction, durability, and gripping properties equal to the Vibram 1276. The outsole must be able to retain its design and all performance requirements when directly exposed to temperatures up to 300 degrees F. The color of the Vibram identification plug and outsole shall be Coyote color 476/498 to match the upper material and shall be non-marking.

3.14.4.1 Rubber compound requirements. The requirements for the rubber outsoles are based on the testing performed on 0.250- or 0.070-gauge inch test slabs (in accordance with ASTM procedures) and are not actual soles. There may be some deviation on actual outsoles or midsoles based on style thickness and curing parameters. The requirements shall be as specified in Table VII, when tested in accordance with 4.6.2.

Table VII. Rubber Compound Requirements

Characteristics Outsole 4 Iron Midsole Test Method NBS abrasion 150 min. N/A ASTM-D-1630 Hardness (shore A) 70-80 A N/A ASTM-D-2240 Stitch Tear (dry) 180 lb. min. 180 lb. Min ASTM-D-4786 Stitch Tear (Fuel B) 50 lb. min. 50 lb. Min ASTM-D-4786 Die C-tear strength 300 lb. min. N/A ASTM-D-624 Ross flex, Oil #3 1/ 250% max. @ 50,000 flexes N/A ASTM-D-1052 Volume swell, Fuel 30% max. 30% Max ASTM-D-471 B (@ 46 hrs.)

Non-marking Pass N/A SATRA MTM-223 Tensile 2,100 lb. min. N/A ASTM-D-412 Elongation 400% min. N/A ASTM-D-412

1_/ Test is performed by applying one drop of #903 oil per 6,000 flexes

3.14.5 Bond Strength. The bond achieved between any of the bottoming layers (cushion midsole to upper, solid midsole, and cushion midsole to outsole) to include the boot upper shall meet performance requirements as stated below and be permanently resistant to any delamination. Any bond failures between any of the components will be explicitly covered under warranty, and those failed items will be replaced on a one-for-one basis, no questions asked (as is done in commercial practices).

3.14.5.1 Entire sole to upper. (For DMS and Injected Molded). Not Applicable for injection molded, this only applies to DMS, Welt and Stitch-down, there is no solid midsole in an injection molded process.

The bond strength (at the ball) shall not be less than 130 pounds. Test shall be performed on the end item as specified in Table XV. When 5 end items are tested, no more than one test item may fall below 130 lbs. while no recorded values shall fall below 110 lbs. Testing shall be as specified in 4.9.1.3.

3.14.5.2 Outsole to Cushion Midsole Bond Strength. The outsole to cushion midsole strength shall not be less than 140 pounds when tested as specified in Table XV. The test shall be performed on the end item. When 5 end items are tested, no more than one test item may fall below 100 lbs. While no recorded values shall fall below 80 lbs. Testing shall be as specified in 4.9.1.1.

Note: The components of the sole shall be layered in such a manner that the specified Bond Strengths will be achieved regardless of the type of sole construction (i.e., 3 layer or injected molded process). If test results find values to be less than specified due to material failure in regard to the bond between the layers, the test will be classified as a failure.

3.14.5.3 Solid midsole to cushion midsole bond strength. (N/A for Injection Molded). The solid rubber midsole or base sole to cushion midsole bond strength shall not be less than 120 pounds when tested as specified in Table XV. The test shall be performed on the end item. When 5 end items are tested, no more than one test item may fall below 100 lbs. while no recorded values shall fall below 80 lbs. Testing shall be as specified in 4.9.1.1.

3.14.6 Adhesion to toe (DMS only)

The bond strength at the toe area of the sole shall not be less than 60 pounds, with the exception that one specimen out of the five tested may be below 50 pounds, but not less than 40 pounds. Testing shall be as specified in 4.9.1.2.

3.15 Removable cushion insert. The removable cushion insert shall be a low-density polyether-polyurethane heel cup support made of a polyurethane system, black in color, and lined (black or tan in color). The cloth shall conform to the requirements of the cushioned insert in 3.7. The cushioned insert shall provide comfort and shall be made to optimize the fit of the item, given the last the item was made

on. The cushion insert should take a minimal compression set, even after extensive wear or material conditioning. The cushion insert and its lining shall be resistant to fungal growth, provide good frictional characteristics, and shall not be susceptible to hydrolysis. Cushion inserts shall have durability such that they last for the life of the item. Cushion inserts shall be properly mated to the item with a last used in the manufacturing of the item. Cushion insert shall be mated, by size, to the correct sizes boots and shall be uniform. The total thickness of the insert shall be a minimum of 0.100 inch forward of the instep, and a minimum of 0.220 inch elsewhere. Requirements are outlined in Table VIII. Testing shall be as specified in 4.6.2.

TABLE VIII. Removable Cushion Insert Requirements

Characteristics Requirement Test Method Density 16-20 lb./ cu. ft. ASTM-D-3574 Foam Hardness 55-65 Shore 00 ASTM-D-3574 Tensile Strength > 80 psi ASTM-D-3574 Compression Set @ 25% < 5% ASTM-D-3574 Compression Set @ 50% < 5%

Fabric Liner: Martindale Abrasion Fabric Only; Dry 153,600 revs/9,600 cycles min. ASTM-D-4966 1/

Fabric Liner: Bursting Strength

Fabric Only 125 lbs. min. ASTM-D-3787 1/ As described in the test method; Martindale Tester; Pressure applied: 12 kPa; Visually examine specimens after each 3200 cycles; Abradant changed after each 3200 cycle.

3.16 Laces. The color of the laces shall be Coyote color 476/498 and match the color of the upper leather. The laces shall not fray during military use. The length of the laces shall be a minimum of 66 inches. Laces shall meet minimal requirements found in CID A-A-55093 (Type III, Class 1).

3.17 Lasts. The boots shall be made on a last specifically designed for men and a last specifically designed for women and that meet the requirements found in this Purchase Description and intent of this specific piece of footwear. The numerical size of the boot shall correspond with the numerical size of the last used to produce the boot (i.e., a size 10R boot shall be produced on a size 10R last). The last design should optimize fit and comfort in conjunction with the overall item design to promote maximum adjustability for the user. Additionally, the last design shall accommodate for the cushion insert that will be used with both the men’s and women’s end item.

3.18 Design. The boot shall be Coyote in color, have a toe up lace closure system with a flex notch, and have a padded comfort collar. The boot shall contain a partial speedlace closure system and removable cushion inserts. The boot leather shall be breathable, waterproof, mildew resistant Coyote color 476/498 The boot shall have nylon quarters and a polytetrafluroethylene microporous liner. The exterior components, including the comfort collar, backstay, ankle reinforcement straps, shall not wick moisture.

The boot shall have a resolable rubber outsole and a pure polyether polyurethane cushion midsole. The design and pattern must follow the example provided in Figures 2A and 2B.

3.19 Construction.

3.19.1 Cutting uppers. The leather parts shall conform to the thickness specified in Table IX and the requirements of MIL-PRF-3122K for Type I & II. V a m p s s h a l l b e c u t f r o m t h e b e n d a r e a o f t h e s i d e l e a t h e r . V a m p s s h a l l b e e x a m i n e d a s s p e c i f i e d i n T a b l e X I . All other leather (eyelet stays, ankle reinforcement) shall conform to the thickness specified in Table IX. Vamps shall be cut from the bend area of the side leather. Vamps shall be examined as specified in Table XI.

TABLE IX. Thickness of leather uppers (ounces)

Thickness of leather uppers (ounces) Part Class I Cattle hide

Min Max Vamp 5 6 Outside Counter Pockets

4 6

Front Edge Eyelet Stay 3 4 Eyelet Stay 4 6

3.19.2 Skiving. Skiving of upper leather parts is permitted. The vamp shall be skived at the throat and wings. Skiving of the top edge of the outside counter pocket shall not be permitted. Splitting of the leather is only permitted for the inside eyelets stays.

3.20 Boot finishing. No top finish or treatment shall be used on boots.

3.21 Leakage. The finished boots shall show no evidence of leakage when tested as specified in paragraph 4.9.2.

3.22 Marking, permanent identification. With the exception of Product Managers (PDM), the contractor shall permanently mark the correct size, width, contract number (Example: 04- D-9999), and company name on the inside of gusset/tongue area. A company logo or name is not permitted anywhere on the exterior of the boot. The permanent marking shall be done in accordance with acceptable commercial practices and shall not reduce footwear functionality. The boot shall contain a manufacturing tracking lot number. Unit packs will include national stock number (NSN) and Universal Product Code (UPC) bar codes as specified in the contract. Each symbol must be human and scanner readable. Heat embossing of the USMC "Eagle, Globe, and Anchor" Logo is required on the outside quarter (heel area) on both the left and right boot. The design detail of the Eagle Globe and Anchor (EGA) shall be clearly visible from a distance of three (3) feet. The emblem shall be positioned in such a manner that the anchor faces the front of each boot.

The die sizes for embossing of the EGA are as follows:

Boot Size Die Size for the Eagle, Globe, and

Anchor Men’s 3 through 7 ½ Small

Men’s 8 through 10 Medium

Men’s 10.5 through 16 Large Women’s 4 through 9 1/2 Small Women’s 10 through 11 Medium

For non-depot shipments, each unit pack and exterior container shall be marked following standard commercial practices. Unit pack identification shall include the item name, NSN, and UPC with bar code, contract number, American sizes, and widths and as an option, the contractor’s name and/or logo. The initials “UPC” must appear under the UPC bar code. The exterior containers shall be marked to identify the NSNs with bar code, quantity, unit of issue, and date of pack. Contract number, shipment number, pallet gross weight and cube and a visible marking with the words “MADE FOR DSCP.” Depot shipments for boots shall be marked in accordance with MIL-STD-129P.

3.23 Instruction tag. The instruction label/tag is to be tied to the finished boots and the print size shall be 8 to 10 points, 1/8 inch (+/- 1/32) inch. The instruction/label tag shall be printed using the data specified and approved by the Government prior to full rate production. The information provided in Sections

3.23.1 through 3.23.6 must be included on the care and use instruction label/tag. Each item shall be individually bar-coded. The bar-coding element shall be a 13 digit NSN. The bar code type shall be a medium to high code density and shall be located so that it is completely visible on the item when it is folded and/or packaged as specified in the contract and so that it causes no damage to the item. As an option, component and boot feature hangtags may be attached to the boots.

3.23.1 Safe use of your USMC Temperate Weather Boots. “For the safe use of your USMC Temperate Weather Combat Boots: 1) Wear 1 pair of socks made of wool, acrylic, polyester, olefin, nylon, or lycra blend. Cushion soled socks are recommended. 2) Always wear with one pair of insole inserts. In some instances, it may be necessary to select a slightly larger size boot than normally worn in order to allow for normal swelling of the feet and the use of insole inserts or cushion socks. Pull on boot, seating heel firmly into place, then lace. Boots should fit snugly but not tightly. There should be at least a 3/8 inch minimum additional length at the toe. If blistering occurs, check to make sure that the boots are fitted properly and that you are wearing recommended socks.”

3.23.2 Cleaning and Maintenance Instructions. “To Properly Clean and Maintain your USMC Temperate Weather Combat Boots: 1) Brush mud and excessive dust-off boots with a stiff nylon bristle brush and warm water. These boots have a suede finish and are not to be polished. 2) Wipe inside of boots occasionally with a moist rag and let dry. 3) As frequently as possible, dry boots and insole in the sun. If boot becomes wet, empty excess water, change socks, and continue to wear while changing socks regularly. Boots will dry much faster when worn than if left to stand and dry. Do not place near intense heat as this will destroy nylon and leather. 4) The nylon side panels of your boots are as strong as leather and will last if cared for properly.” Do not use soap to clean your boots. If more stringent cleaning is necessary, only water-soluble cleaning products should be used as oil- or alcohol- based cleaning products may damage your boots.

3.23.3 When to Replace the USMC Temperate Weather Boot Outsole. “Your USMC Temperate Weather Boots come with a replaceable rubber outsole. Do not wear the any part of the outsole past 1/16” (in thickness) or permanent damage of the cushioned midsole will occur. The midsole is the soft cushioned material between the rubber lug outsole and the boot upper. To find the repair retailers closest to you visit http://www.vibram.us/repair.”

3.23.4 Purpose and Performance of the USMC Temperate Weather Combat Boot. “Your USMC Temperate Weather Combat Boots are designed for maximum comfort and performance in temperate weather environments.”

3.23.5 How to get your boots resoled. “To find a Vibram sole repair retailer close to you visit http://www.vibram.us/repair.” Visit http://www.marcorsyscom.usmc.mil/sites/mcub/ for a list of USMC Approved Resoling Services.

http://www.vibram.us/repair http://www.vibram.us/repair http://www.marcorsyscom.usmc.mil/sites/mcub/

3.24 Workmanship. The quality of workmanship and end product for this item is expected to exceed that found in standard commercial industry given the known environment and user for which the item is being manufactured. The finished boots shall conform to the quality of product established by this document.

The occurrence of defects shall not exceed the contractor's own quality assurance standards and the quality assurance standards defined by the technical data in the bid package. The Government will not accept poor quality workmanship, manufacturing defects, or low-quality end products.

3.25 Visual Quality Workmanship End items shall have no tears, holes, evidence of repair or other damage. There shall be no markings remaining on the boot upper. Components shall be placed properly, and all assembly operations shall be executed properly. Boots shall be paired properly.

3.26 Seams, Stitching, and Workmanship All seams shall be uniformly stitched, and shall be locked such that it cannot be pulled out. Open seams, broken seams, or run-off stitches shall not be present. When multiple stitch seams are utilized, the stitching shall be regularly spaced between stitches and rows of stitches. Tight seams which cause components to pucker, wrinkle, or malform shall not be present. Loose seams shall not be present. Thread ends shall be trimmed throughout the entire boot. Outsole seams (if utilized as specified in this document) shall not deform outsole pattern and shall be uniform distance to edge of outsole. Stitching gauge shall be regular, and needle holes or needle "chew" shall not be permitted. Internal seams shall not be such that they cause irritation, "hot spots", blisters, or other damage to the user.

4. VERIFICATION

4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or another facility suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements.

4.1.1 Responsibility for compliance. All items shall meet all requirements of Sections 3 and 5.

The inspection set forth in this specification shall become a part of the contractor's overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of ensuring that all products or supplies submitted must comply with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice in ascertaining conformance to requirements; however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material.

4.1.2 Responsibility for dimensional and material requirements. Unless otherwise specified in the contract or purchase order, the contractor is responsible for ensuring that all specified dimensions have been met. When dimensions cannot be examined on the end item, inspection shall be made at any or all points necessary within the manufacturing process to ensure compliance with dimensional requirements.

4.2 Certificates of compliance. When certificates of compliance are submitted, the Government reserves the right to inspect and test such items to determine the validity of the certification. Certificates of Compliance are required for the following components:

Upper Leather, IAW 3.3.1, Table IX Insoles, IAW 3.4, Table I Bootie Lining, IAW 3.5.2, Table III Cushion Midsole, IAW 3.14.3, Table VI Midsole IAW 3.14.1,…