Mission Enduracool Competition Cooling Hat 80% Polyester, 20% Nylon Cools Instantly When Wet to 20 Degree below average body temperature Chemical-Free cooling. Lightweight, UPF 50 protection against the harmful rays of the sun Cooling zones in the sweat band and front panels regulate the evaporation of moisture for a prolonged cooling effect. The ultra wicking fabric pulls sweat from the body and encourages quick drying Proprietary fabric activates when you sweat during activity You can also activate the technology by wetting the hat before wear. Soak the hat in water, wring it out and snap in the air for instant cooling You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!