We flattened out the fibers in this running shirt and added some science to create a game-changing fabric that quickly pulls heat away from the skin-keeping you calm, cool, and crushing the miles at max capacity.Features:- New, lighter Iso-Chill fabric helps disperse body heat, making it feel cool to the touch.- Strategic laser perforations for added ventilation where you need it.- UPF 30 protects your skin from the sun´s harmful rays.- 4-way stretch material moves better in every direction.- Material wicks sweat & dries really fast.- Odor control technology minimizes odor.- Side-vent hem.- Reflective details for low-light runs.- Fitted:Streamlined fit that´s not too tight or too loose.Specifications:- Material:90% Nylon/10% Elastane.