Under Armour Men's Locker Shortsleeve T-Shirt 100% Polyester Updated lightweight UA Tech fabric with an ultra-soft, natural feel for unrivaled comfort Re-engineered athletic fit and lightweight stretch construction allow for full range of motion Signature Moisture Transport System wicks sweat away from the body Anti-odor technology prevents the growth of odor-causing microbes Smooth, chafe-free flatlock seam construction