"Hook and Loop closure MATERIAL: 100% Paper Straw Woven. Tightly woven for the quality and durability. Strong Anti-UV Function, UPF 50+ SIZE: One Size Fits Most / Circumference is about 22.5\" Beach Sun Hat, Summer Street Fedora Hat. Great for beach, boating, vacation, park or pool, hiking, camping, gardening, travelling, tourism, weekend getaway, honeymoon."