Siggi Packable UPF50 Hiking Sun Hat Women 100% Cotton Chin Strap Ponytail 55-59CM Fabric:100%polyester; Lining:18%cotton/82%polyester. SIZE: 56-58cm 22"-22.8" 7- 7 1/4. (drawstring adjuster built inside the sweatband) FOLDABLE: packable, crushable! Great for cruise, travel, gardening, boating or beach vacation. UPF 50+: passed UPF test, it could block most of sun UV rays. DETACHABLE CHIN STRAP: adjustable for a better fit; won't blown off when it gets windy. When shipped by Comhats, it takes 8-12days to be delivered. If you hope to get a PRIME service, please choose "Fulfilled-by-Amazon".