Brisk Cooling Promotes comfort and endures safety in high heat conditions Provides extended cooling comfort and heat stress prevention Brisk Cooling is lightweight durable and reusable Activated by simply submerging in water Cooling lasts for 5 10 hours &amp can be re activated by re submerging in water Simple and easy to use One size fits most div EVAPORATIVE COOLING TECHNOLOGY /div div Specialized fabrics and fibers create an advanced water management system called ‘HyperKewl’ /div div HyperKewl absorbs stores and releases water within the multi layered structure /div div The fabrics cool itself through evaporation and a chill effect is created /div div Users can expect the evaporative cooling fabric to provide temperatures that are up to 15 20° cooler than the ambient temperature /div p em Fabric dye lot variances may occur and meet luminance factor as stated in the standard /em br /p