Under Armour Men's Coldblack Engineered Stripe Polo 93% Polyester/7% Elastane Revolutionary coldblack technology reflects IR & heat rays, so even dark color dont get as hot UPF 30+ protects your skin from the sun's harmful rays Yarn-dyed fabric is stretchy, light & breathable so it can handle the hottest days Material wicks sweat & dries really fast Anti-odor technology prevents the growth of odor-causing microbes