Tilley Endurables LTM5 Airflo Unisex Hat 100% supplex nylon; mesh 100% polyester Imported 100% supplex nylon; mesh 100% polyester Medium brim with 3/4-inch polyester mesh in the crown plus dark underbrim for glare protection Maximum UPF 50+ sun protection rating Secret pocket in the crown for storing license, $20 bill, or room key Constructed from water and mildew resistant from 100 percent supplex nylon