Tilley Endurables LTM5 Airflo Nylamtium Hat - Khaki/Olive The LTM5 AIRFLO Tilley Hat is designed with a medium brim and ¾" polyester mesh in the crown for coolness and comfort during hot days and strenuous activities. Made with Tilley Nylamtium, a strong water-and-mildew resistant form of lightweight nylon. Product Features: 93% Nylon and 7% Spandex Medium brim with 3/4-inch polyester mesh in the crown plus dark underbrim for glare protection Constructed from water and mildew resistant from 100 percent supplex nylon Tilley Nylamtium Maximum UPF 50+ sun protection rating Secret pocket in the crown for storing license, $20 bill, or room key Hand wash or machine wash on delicate cycle Color: Khaki With Olive Underbrim