Combat heat stress and fatigue with an intense cooling experience! Radians Arctic Radwear? head shades are made with advanced ARCTIC? technology that accelerates the evaporative cooling process. With a patented stretch-fit spandex design the band will move with your body, not against it. This design allows for optimum blood circulation, keeping you cooler and providing a noticeably more comfortable fit than standard headbands. You can be cool during hot outdoor activities, such as construction work, tough workouts, or any strenuous outdoor or indoor activity. Just soak the band in water for 2-3 minutes and then wear it for up to 5 hours of cooling relief.