UA Storm technology repels water without sacrificing breathability. ColdGear Infrared technology uses a soft, thermo-conductive coating to absorb & retain your body heat. 30+ UPF protects your skin from the sun's harmful rays. Anti-odor technology prevents the growth of odor-causing microbes. Material wicks sweat & dries really fast. Mock collar construction for added coverage & protection. Reflective silver UA logo on upper back. Fitted. 87% Polyester/ 13% Elastane.