Ergodyne - EGO12669 Made with a soft and absorbent material, the 6602MF Evaporative Cooling Towel is easy to activate and comfortable to wear up to 3 hours. This chemical-free, microfiber towel protects you from harsh UV sun rays and has UPF 50 plus protection. Just run it under water until saturated, wring out the excess water and allow the cooling relief to do the rest. PVA cooling material absorbs water, and once it starts evaporating, the cooling sensation begins. Wear the towel when working or playing outside to reduce the chance of heat exhaustion and to fight fatigue. Towel can even bring down fevers, hot flashes or night sweats. It is great for working construction, landscaping, mining and more. It's even beneficial for outdoor activities like hiking, camping and fishing. Towel fits around your neck or head to keep you cool in the heat. Reusable, just re-wet after 3 hours. The towel is machine-washable with mild detergent and should be air-dried.