Aqua Design Men's Skyward Camouflage Sun Protection Boonie Sahara Fishing Hat 100% Microfiber Polyester Adjustable - One Size Fits All Accommodates Sizes 6 - 7 5/8, (18" - 24") Shock cord adjustment with cordstopper closure Elliptical 15 3/4" x 12 7/8" brim Mesh inner liner Floating foam brim Ultra-wicking moisture management