Under Armour flattened out the fibres and added some science to create a game-changing fabric that quickly pulls heat away from the skin—keeping you calm, cool, and focused on your game. Features: Iso-Chill fabric helps disperse body heat, making it feel cool to the touch 4-way stretch material moves better in every direction Material wicks sweat & dries really fast UPF 50+ protects your skin from the sun's harmful rays Low-profile, modern collar Side-vent hem 91% Nylon/9% Elastane Loose: Fuller cut for complete comfort. UA Iso-Chill Verge Polo