This Under Armour women's t-shirt is made from Iso-Chill fabric that dissipates body heat and provides a cool feel. It offers better ventilation thanks to mesh panels in the armpits. The material quickly wicks away sweat and dries quickly, while UPF 50+ protects the skin from the sun's harmful rays. Odor control technology minimizes unpleasant odors. Internal thumb holes help keep the sleeves in place.