The Mens 5.11 Tactical 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. The main body of the shirt is a fitted poly cotton, cotton and spandex mix making this the ultimate tactical base layer designed for use with body armour. Featuring a saddle-shoulder design for free movement and large storage pockets at the shoulder for storing the essentials you need within easy reach the Rapid Assault Shirt has everything you need for the ultimate survival adventure.