Table II. Sock performance requirement.docx

This file is a technical specification table documenting sock performance requirements for a combat boot sock procurement. The specifications establish mandatory fiber composition (minimum 52% wool, 20% nylon, 1% spandex, with no cotton or rayon permitted) and detailed performance criteria measured through standardized testing methods. Critical physical performance requirements include thickness specifications (0.16 to 0.20 inches in the sole area), minimum bursting strength of 85 pounds force at the heel, and graduated compression ranging from 8-15 millimeters of mercury at the ankle with 65-85% compression at the calf. The sock must maintain dimensional stability with maximum 7% shrinkage in length and width, achieve minimum 85% elastic recovery in the top cuff after one hour, and demonstrate vertical wicking of at least 2 inches after 30 minutes following three launderings. Colorfastness requirements specify minimum ratings of 4 for all colors except black (minimum rating 3) across multiple test methods including laundering, perspiration, and crocking tests. Durability standards mandate minimum pilling ratings of 3 after both 25 and 50 laundry cycles (tested on heel gore and toe sections only), with color retention specifications requiring minimum rating 4 with no color streaking after 25 cycles and minimum rating 3 with no color streaking after 50 cycles. All testing must comply with specific ASTM and AATCC standardized test methods referenced in the requirements table.