The 5.11 Tactical Rapid Assault Combat Shirt is an ideal base layer for tactical use in any operational environment. The body section consists of a poly/cotton spandex knit blend to offer an agile and flexible base with moisture wicking and quick-drying properties. The sleeves are made of an ultra-durable poly/cotton ripstop blend that can withstand the harshest environments. The saddle shoulder design takes the weight of body armor without pinching or bunching. The large shoulder pockets provide quick and convenient storage. Mesh panels offer enhanced breathability. There is an integrated woven collar that could be worn up or down. This shirt has a quarter-zip design and flat lock seams for added comfort.