Straw Flexible and durable geniune straw. Does not lose shape over time. Excellent all around sun protection. UPF 50+ Black grosgrain hat band and comfortable sweatband. 4 inch crown height, 2.75 inch brim Our hats are custom made to your size to ensure the best fit. Free 60 day hassle-free size exchange. Ultrafino is a registered trademark. Any form of abuse, trademark infringements is serious business and will result in the punishment of Amazon team and U.S. Trademark law.