Grabber Magic Cool Cooling Bucket Hat Constructed of 80% polyester, 20% polyamide knit. Moisture activated cooling cap made using Comfort Cooling Technology; a chemical free, green product. Perfect for fishing, trail hikes, backpacking, sport activities, adventure travel, yard work, spectator events, outdoor recreation, and sunburn relief. UPF 40 shields skin from the sun's harmful ultraviolet rays. Folding brim for easy storage in pocket.