Men's Under Armour Launch Elite Graphic T-Shirt. 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 crushing at max capacity.- Iso-Chill fabric helps disperse body heat, making it feel cool to the touch.- Laser perforations on back panel for ultimate breathability.- 4-way stretch material moves better in every direction.- Material wicks sweat and dries really fast. Material: 90% Polyester, 10% Elastane. Ref: 1376518304.