Under Armour Men's Ua Coldblack L/S Tee ColdBlack Fabric Technology - A revolution in keeping cool, effectively blocks out hear and harmful IR rays, keeping you cooler and more protected even in dark colours. 30+ UPF - Protects your skin from the suns harmful rays. Targeted Stretch Mesh - Provides strategic ventilation. Moisture Transportation System - Wicks moisture from the skin to evaporated, keeping the wearer dry and comfortable. Anti-odour Technology - Keeps the garment feeling ans smelling fresh by preventing the growth of odour causing bacteria.