BODY:5.0 oz.84% Polyster, 16% ELASTANE; MESH: 4.6 oz.92% POLYSTER 8% ELASTANE; HeatGear fabric, with all the benefits of UA Compression, comfortable enough to be wron all day; Stretch-mesh underarm panels deliver strategic ventilition; UPF30+protects your skin from the sun's harmful rays; 4-way stretch farbication allows greater mobility & maintain shape; Moisture Transport System wicks sweat awat from the body; Anti- odor technology prevents the growth of odor causing microbes; Mesh panel on back neck with ARMOUR wordmar