Under Armour Men's UA CoolSwitch Training Cap UA CoolSwitch uses an exclusive coating on the inside that pulls heat away from your skin, making you actually feel cool and able to perform longer Structured build maintains shape Lightweight AirVent technology delivers true breathability in a stretchy, durable, fast-drying fabric UPF 30+ protects your skin from the sun's harmful rays Built-in HeatGear sweatband wicks away sweat to keep you cool and dry