Siggi Bucket Cord Sun Summer Beach Hat Wide Brim for Women Foldable UPF 50+ 100% cotton fabric; cotton/polyester lining SIZE: ONLY FIT for 56-58cm 22"-22.8". NOT FOLDABLE: it will leave bent mask if folded. we advise to ROLL it to take out. SPF 50+: this sun hat has passed UPF 50+ test, it could block 97.5% or more of sun UV rays. CHIN STRAP: the detachable neck cord will keep hat stay safe on head in wind. When shipped by Comhats,it will be fulfilled within 2 days after being ordered. Usually it takes 8-10days to be delivered. If you hope to get a PRIME service, please notice to choose "Fulfilled-by-Amazon".