Seektop Surf Bucket Hat with UPF 50+ UV Protection 。?100% Polyester ?Color: Gray ?Imported ?Clasp closure ?Hand Wash Only ?MEASUREMENT: Head circumference 22.5-23.5\"/57-59cm, for large-head adults. Hat brim 2.5\"/6.3cm, keeps the sun off one\'s scalp and shields the eyes nicely, provides sun protection on the head face, ears, & neck ?CHIN STRAP: the adjustable chin strap holds the hat in place, especially on windy days, it prevents the hat from blowing off the head, and the strap is also removable when you don\'t need it ?MATERIAL: 100% Polyester, the water-resistant fabric makes this sun hat also an ideal rain hat that is great for those rainy days when you don\'t want to carry an umbrella or go on water activities like paddle boarding, kayaking, swimming, sailing ?PACKABLE: lightweight and packable, easy to pack, and rollable to your bag and pocket. This fisherman hat is great for working outside, traveling, going outdoor activities, street strolling, and yard work for sun or rain protection.