Initially, the torso of the shirt was foliage green with the Army Strong logo centered on the chest (removed in later versions); the arms are in the Universal Camouflage Pattern similar to the Army Combat Uniform, with integrated anti-abrasion elbow pads. No-seam shoulders minimize rubbing or chafing against armor. With the adoption of the MultiCam uniform for wear in Afghanistan, there is now a version made with a coyote brown body (Tan 498) and MultiCam sleeves. When the US Army adopted the Operational Camouflage Pattern starting in 2015, a third variant became available which complies to the US Army uniform regulations code AR 670-1 (Wear and Appearance of Army Uniform and Insignia) with a tan/green body (Tan 499) and sleeves in the OCP pattern. Other features include a double pen pocket on the lower arm, zippered storage pockets on the upper arm, concealable infrared identification tabs, and a place to attach name, rank, and flag on the upper arm. There are two styles of the ACS available for soldiers. The Type I has a mock turtle neck and the Type II has a Mandarin style collar with a 3/4 zipper on the chest/neck. The features of all three shirts, besides the collar differences from the two types, are all the same.
