Sisters One, Inc.

Sisters One, Inc., doing business as AD Diwan, is a minority-owned, Black American-owned small business based in Herndon, Virginia, that supplies Islamic religious and cultural items to the Defense Department as a prime contractor under Total Small Business set-asides. The vendor operates exclusively as a prime on a single-award indefinite delivery contract (SPE1C122D1523) with the Defense Logistics Agency Troop Support Clothing and Textiles division, valued at $1.82 million and running through December 28, 2026.

Sisters One holds a monopoly position in federal procurement of specialized Islamic religious products for military personnel. The vendor's customer concentration is extreme: 99.5% of its 3,784 awards (3,783 of 3,784 delivery orders) go to the Defense Logistics Agency Troop Support Clothing and Textiles division, with a single award from the Department of the Air Force accounting for the remainder. Combined potential value across all awards stands at $8.8 million, of which $1.8 million has been obligated as of the source date.

The vendor's product catalog comprises prayer rugs, Islamic religious books (including titles such as "Riyadh Us-Salah," "40 Hadith," and "Islam in Focus"), prayer beads in black and white variants, prayer compasses and kiblah compasses, religious headwear including kufis (men's) and kimars (women's), prayer oils in fragrances such as sandalwood and Egyptian musk, prayer clocks, miswaks, and dried dates. All work is performed at Sisters One's Herndon headquarters. Individual delivery order values range from eight dollars to $2,100, with most orders falling between $100 and $700. The vendor classifies under PSC 8512 (Ecclesiastical Equipment, Furnishings, and Supplies) across all 3,783 DLA orders.

Sisters One operates under three parent indefinite delivery contracts. The largest, SPE1C122D1523, carries 1,919 task orders valued at $756 thousand combined potential value and was awarded December 29, 2021. Contract SPE1C117D1007 holds 1,491 task orders worth $539 thousand combined potential value. Contract SPM1C112D1005 carries 366 task orders valued at $398 thousand combined potential value. Cumulative deliveries against the SPE1C122D1523 parent contract exceed $1.7 million of the $1.82 million ceiling as of February 2026.

Award activity declined sharply in recent years, from 568 awards in 2024 to 388 in 2025 to 170 through July 2026. The vendor faces recompete exposure as the parent contract ceiling approaches exhaustion and the December 28, 2026, completion date nears; all outstanding delivery orders against the primary vehicle face ultimate completion dates between June and December 2026, representing the full remaining contract pipeline.