The Mission EnduraCool Instant Cooling Wrap is athlete engineered and made from proprietary performance fabric that instantly cools when it is soaked with water, wrung out and snapped in the air to activate its cooling properties. This thermoregulating technology works by absorbing moisture and perspiration into the fabric where the unique radiator-like fiber construction circulates water molecules and regulates the rate of evaporation to create a prolonged cooling effect. This technology is permanently part of the fabric and won't wash out with use. Features: - Proprietary technology cools to 30 degrees below average body temperature when wet - Reusable and machine washable - UPF 50 protection from the sun - When wet, stays cool for hours - When dry, soft and absorbent - Chemical-free