100% Nylon Pull On closure Machine Wash UPF 50+ - blocks 98% of UVA/UVB rays FABRIC: Nylon material that is travel friendly, packable, and crushable FEATURES: Shapeable brim for customizable sun protection, tulip detail on brim and removable chin cord with adjustable toggle for extra security; Approx. circumference: 22 1/2 inches; 5 1/8 inch brim; Machine wash, line dry; 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+ Women's CYD Travel Beach Hat Sun Protective - B44H7WZLG