SIGGI UPF50+ 4-10 Years Kid Bucket Sun Hat Foldable 51-53CM w/Chin Cord Floppy Fabric:100%cotton; Lining:43%cotton/57%viscose. Breathable and comfortable. Size: 51-53CM. FOLDABLE: packable, crushable! Great for travel, gardening, boating or outdoor sports. UPF50+: the 2.3" wide brim blocks most sun UV rays and provides excellent full coverage of head&face. 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".