What Is the Official Air Force T-Shirt? | Current Uniform Standards

The official Air Force T-shirt is the Coyote Brown (Tan 499) crew-neck worn tucked into the OCP uniform, with a Desert Sand/Tan version authorized only for the legacy ABU uniform.

Every Airman has to know which T-shirt goes under which uniform, and the answer changed with the transition to the Operational Camouflage Pattern (OCP). The current standard is straightforward, but a few exceptions and legacy rules still catch people off guard. Here is what the governing regulation — DAFI 36-2903 — says about color, fit, materials, and the specific situations where different shirts are allowed.

OCP Uniform: The Only Current Standard

Since 1 April 2021, all U.S. Air Force personnel have been required to wear the OCP uniform. Under the OCP, the only authorized T-shirt is Coyote Brown (Tan 499). It must be a crew-neck style without pockets and must be tucked into the OCP trousers. Synthetic moisture-wicking fabrics, 100% cotton, or cotton-poly blends are all fine as long as they match the Coyote Brown color.

The effective dates are important: as of 1 September 2020, Airmen were directed to wear only the Coyote Brown shirt with the OCP, and the requirement became universal for everyone by April 2021. Wearing the older Desert Sand/Tan shirt with the OCP is the most common mistake — it is out of policy.

ABU Legacy Rules

The Airman Battle Uniform (ABU) is no longer the primary uniform, but the regulation still covers its legacy standard. With the ABU, the authorized shirt is Desert Sand/Tan, crew-neck, and without pockets. The same fabric allowances apply — synthetic, cotton, or blends in the required color work. Although the ABU wear-out date has passed, anyone still in the ABU under a transition exception must follow this older rule.

Exceptions: Morale Shirts and Breastfeeding Shirts

Two specific exceptions to the standard T-shirt are written into DAFI 36-2903. Morale T-shirts may be authorized by a squadron commander for wear on Fridays or during special events. The shirts must be a single standardized color across the squadron, limited to a small squadron patch over the left chest, and are generally restricted to in-garrison or on-station duty. These are not a universal right — they require official authorization.

Breastfeeding T-shirts are authorized for nursing Airmen. They may be long-sleeve or short-sleeve and must be Sand with the ABU or Coyote Brown (Tan 499) with the OCP. The shirt must be tucked in unless worn with the maternity uniform. This exception is expressly covered in the regulation and is not subject to local commander approval.

Flight Operations Material Restriction

A separate safety caveat applies during flight operations. The T-shirt must be cotton or fire-retardant material. 100% nylon or 100% polyester shirts are not authorized for flight duty. This rule overrides the general fabric allowance and exists for fire-safety reasons in the cockpit.

The governing document is DAFI 36-2903, which covers all uniform standards. If you are building a proper OCP uniform kit, checking the latest version of that instruction is the only way to confirm you have the current authorized products — the best Air Force T-shirts for your uniform are the ones that match these exact color and style requirements.