100% paper straw braided. Hand Wash Only SIZE : Small fits for 55-56.5CM,6 7/8-7, 21.6"-22". With an adjustable tape built in sweatband to help find the best fit. Packable, crushable, NO crease! 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 snug fit; won't blown off when it gets windy. VENTILATED: perfect for beach vacation, also great for summer rides, fishing and hiking. Comhats Womens Floppy Summer Sun Beach Straw Hat UPF50 Foldable Wide Brim 55-60cm - BIFK1U22L