Mission Cooling Bucket Hat 100% Polyester Proprietary technology cools instantly when wet Drawstring for custom, adjustable fit Lightweight design is breathable and comfortable for all activities; provides UPF 50 protection from the sun Ultra-wicking fabric pulls sweat from the body and encourages quick drying Activate the technology by wetting the hat before wear; soak hat in water, wring out and snap in the air for instant cool