Product DNA 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. Fitted: Next-to-skin without the squeeze Iso-Chill fabric helps disperse body heat, making it feel cool to the touch Material wicks sweat & dries really fast Laser perforations on lower back & underarms for strategic ventilation Free cut edge seams & bonded collar lay flat for zero-distractions Dropped, side-vent hem Style #: 1361424 100% Polyester Imported Machine wash cold with like colors Use only non-chlorine bleach when needed Tumble dry low Do not iron Do not use softeners Do not dry clean