NYFASHION101 Solid Color Band Raffia Straw Weaved Panama Fedora Sun Hat One size fits most for this panama fedora hat. Material is 100% raffia straw. The brim measures 3.0". This sun hat blocks 88% UVA/UVB rays, with UPF 50+ as well. This sun hat has an adjustable drawstring to keep the hat secure on breezy days. Stay shaded and keep cool with this stylish, fun, sun hat!