The 5.11 Rapid Assault Shirt was engineered with direct input from military and law enforcement personnel as an ideal base layer for tactical use in any operational setting. Featuring a unique dual fabric construction, the Rapid Assault Shirt consists of a poly/cotton/spandex knit body section that offers an agile and flexible base with moisture wicking and quick drying properties, along with ultra-durable poly/cotton ripstop sleeve sections that can withstand the harshest environments. A saddle shoulder design takes the weight of body armor without pinching or bunching while providing full freedom of movement. Large shoulder pockets provide quick and convenient storage, mesh panels offer enhanced breathability, and the integrated woven collar can be worn up or down. When you need unhindered maneuverability and hard charging performance, the Rapid Assault Shirt is the only choice. The ultimate tactical base layer Designed for use with body armor Dual fabric construction Large storage pockets at each shoulder Mesh panels for breathability 1/2 zip front Collar can be worn up or down Body section is compression fit poly/cotton/spandex Sleeves are poly/cotton ripstop Reinforced articulated elbows Saddle-shoulder design for free movement Seamless underarms eliminate chaffing Flat lock seams throughout increase comfort