100% Cotton Elastic closure UPF 50+ - blocks 98% of UVA/UVB rays FABRIC: Packable, cotton chin strap hat; Fully lined cotton crown; Internal sweatband and elastic drawcord with toggle at center back for adjustable fit FEATURES: 3 inch brim; Approx. circumference: 22 1/2 inches (Medium), 23 inches (Large), 24 inches (X-Large), 25 inches (XX-Large); Spot clean, wipe gently with clean cloth; Imported RECOMMENDED FOR: when you want to pack light and travel in style - technical sun protection to take you from sightseeing to a café lunch NOT RECOMMENDED FOR: swimming, not chlorine and salt water resistant or water repellent Coolibar UPF 50+ Men's Outback Camo Boonie Hat Sun Protective - BF8ZRM4JN