100% Polyester. Hook and Loop closure. Visor: 100% twill cotton, mesh fabric: 100% polyester, breathable and comfortable. Summer mesh cap with adjustable velcro strap. One adjustable size, suitable for head circumference 22 3-23 1 (58-60cm). Cap depth: 4.7"(12CM), bill length in the middle: 2.7"(7CM). 6-Panel, mid profile, unconstructed, curved visor, keep the sun out of your eyes on sunny days