Under Armour Polo Golf Shirt Iso-Chill Mens Short SleeveInstant Cool We flattened out the fibers 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. 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 * 88% Polyamide, 12% Elastane * Imported