BODY:5.0 oz. 84% POLYESTER, 165 ELASTANE; MESH:4.6 oz. 92% POLYESTER, 8% ELASTANE; Stretch-mesh underarm panels deliver strategic ventilation; UPF 30+ protects your skin from the sun's harmful rays; Anti-odor technology prevents the growth of odor causing microbes; Mesh panel on back neck with ARMOUR wordmard