100% PolyesterULTIMATE SUN PROTECTION: UPF 50+ Large brim block out 98% of harmful UVA and UVB rays, these outdoors hat is more than your average sun hat.It is a perfect hat for beach,fishing,hiking,camping,travel,hunting,gardening or any outdoor activities.PACKABLE & LIGHTWEIGHT: The hat is foldable and packable making this the ideal hat for any road trips, travel, or weekend getawaySTAY COOL: Our lightweight hat has mesh panels and two-side air vent, letting your head stay ventilated and cool, even on the hottest and most humid days.ONE SIZE FITS MOST: Casual style unisex sun hat, snug and cosy fit. Rear adjustable elastic drawstring design, one size fits most adults head size.QUALITY GUARANTEE: High quality. If you are not satisfied with the product, please contact us, we will provide you with satisfying service.