SIGGI SPF50+ Foldable Womens Bucket Boonie Sun Hat w/Chin Cord Summer Fabric:81%viscose/19%nylon; Lining:100%polyester. SIZE: 56-59cm 22"-23.2" 7- 7 3/8. (drawstring adjuster built inside the sweatband) FOLDABLE: packable, crushable! Great for cruise, travel, gardening, boating or beach vacation. SPF: passed UPF 50+ test, the 3.7" wide brim could block most 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". 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!