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. Mesh back panel for added ventilation. Material wicks sweat & dries really fast. Body: 100% Nylon, Mesh: 92% Polyester/8% Elastane. 100% Nylon.