The Combat Shirt Is Lightweight and Breathable Offering You Superior Comfort And Range Of Motion. Sleeves have pockets and patches for your ID or unit patches. Tactical Response Uniform sleeves. Polyester/Cotton. Polyester/Cotton, The Shirt Is Lightweight and Breathable Offering You Superior Comfort And Range Of Motion ; Good for spring, summer, autumn and winter Sleeves have arm pockets, zipper pockets, and patches for your ID or unit patches.