Come and see our amazing products. The wide-brimmed mountaineering hat and fisherman hat are made of cotton, which is very soft and comfortable. Its cap circumference is about 23.6 inches. You can easily adjust the head circumference through the elastic buckle behind the sun visor. The adjustable chin strap is durable and easy to slide up and down to ensure that summer hats will not fall under strong winds. The use of technological fabrics can effectively prevent ultraviolet rays. Pls confirm with us about the packing info, stock color and exact production time before placing your order.