Under Armour Men's CoolSwitch Microthread Polo 100% Polyester Imported UA CoolSwitch uses an exclusive coating on the inside that pulls heat away from your skin, so you actually feel cooler UA Microthread technology in the fabric dries faster, wont cling to you, wont chafe & stretches without absorbing sweat UPF 30+ protects your skin from the sun's harmful rays Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes