Siggi Womens UPF50+ Summer Sunhat Bucket Packable Wide Brim Hats w/Chin Cord Fabric:100%cotton; Lining:18%cotton/82%polyester. FOLDABLE: packable, crushable, NO crease! Great for cruise, travel, gardening, boating or beach vacation. UPF50+: the 3.9" wide brim blocks most sun UV rays and provides excellent full coverage of head&face. DETACHABLE CHIN STRAP: adjustable for a secure fit; won't blown off when it gets windy. SIZE: best fit for 56-58cm 22"-22.8" 7- 7 1/2, with an adjustable tape built inside the sweatband. When shipped by Comhats, it takes 8-12days to be delivered. If you hope to get a PRIME service, please choose "Fulfilled-by-Amazon". You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!