A Tilley Classic. One of the original 5 styles, this particular silhouette is what makes their Hats iconic. The Cotton Duck Hat is the same cotton duck that is used on sails. It is strong, weather resistant and durable. Maximum sun protection fabric is certified UPF 50+, the highest given. Water-repellent finish keeps off the rain. Keep valuables safe in the secret pocket. Front & back wind cords system secures Hat in gusty conditions. Hydrofil sweatband to wick moisture away. Grommets for extra ventilation. Stays afloat in water.