Home Prefer Unisex Mens Zip Off Sun Visor Cool Mesh Crown Hat Sun Protection Cap 100% Polyester Imported Pull On closure Unisex design, fit to normal adult head circumference from 21.65" to 23.62" Zip off crown for optional visor Self-fabric adjustable closure 4" long visor for offering protection from sun glares Polyester/nylon fabirc, light weight & quick-dry & breathable & durable