Coolibar UPF 50+ Men's Outback Camo Boonie Hat - Sun Protective 100% Cotton UPF 50+ - protects against 98% of UVA and UVB rays 3 inch brim; Approx. circumference: 22 3/8 inches (Medium), 23 1/4 inches (Large), 24 inches (X-Large), 24 1/4 inch (XX-Large) Packable chin strap hat; Fully lined cotton crown Internal sweatband and elastic drawcord with toggle at center back for adjustable fit Easy care: hand wash, line dry; Imported