Radians ARCTIC RADWEAR Cooling Towels are made with advanced ARCTIC technology that accelerates the evaporative cooling process. Just soak the towel in water for 2 to 3 min and then experience cooling relief for up to 5 hr. the ARCTIC skull Cooling Towel is designed to keep you cool during hot outdoor activities, such as construction work, tough workouts or any strenuous outdoor or indoor activity.