Radians rcs50 arctic radwear cooling wrap, blue radians arctic radwear cooling wraps are made with advanced arctic technology that accelerates the evaporative cooling process. Just soak the wrap in water for 2 3 minutes and then experience cooling relief for up to 5 hours. The arctic radwear cooling wrap is designed to keep you cool during hot outdoor activities, such as construction work, tough workouts, or any strenuous outdoor or indoor activity.