● 100% Cotton ● Clasp closure ● MEASUREMENT: Head circumference 22.5-23.5"/57-59cm,for large head adults. Hat brim 2.5"/6.3cm, keeps the sun off ones scalp and shields the eyes nicely, provides sun protection on head face, ears, & neck ● MATERIAL: Outer 100% Polyster, Inner 100% cotton, the water resistent Polyester side 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 going on water activities like paddle boarding, kayaking, swimming, sailing ● DETAILS:It's double sided, one side is solid color and the other side is chess plaid.It can be both elegant and fashionable. It can effectively protect your skin from ultraviolet rays with good air permeability, wearing for a long time will not feel stuffy. It has a detachable belt and adjustable clasp for strong wind resistance. ● CHIN STRAP: the adjustable chin strap holds the hat in place especially in windy days, it prevents the hat from blowing off the head, the strap is also removable when you don't need it ● 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, yard work for the sun or rain protection.