68% Cotton / 23% Recycled Nylon / 9% Nylon. Thermal Keeps You Warm. Weather Series™. Thermal Fabric. Mock Neck. Slit At Cuff. Long Sleeves With Stripe Detail. Model Is 5'7" And Wears Size Small. Machine Wash. Swing Tech™. Made to maximize your range of motion on every swing, Swing Tech provides noticeably less restriction through re-engineered construction and materials.