Equator Expedition Series hats are designed for survival - built for any environment and any extreme! Designed and tested by adventurer Luke Landers. The Equator Expedition Series sailing style hat offers total head and neck UV sun protection. Solarweave Sun Shield UPF 50+ fabric rating allows just 1/50th of UV rays to pass through, blocking 98% of UV radiation - the highest possible sun protection fabric rating! This adventurer's hat keeps its cool with a rugged mesh vented crown and Coolmax sweatband. Hat stays put in wind with two adjustable wind cords and floats for easy water retrieval, too! 3" hat crown and 2 1/2" hat brim. Made of 100% cotton canvas. Nylon Sun Shield. Imported. Easy hat sizing: M(7-7 1/8), L(7 1/4-7 3/8), XL(7 1/2-7 5/8).