OTTO Deluxe Garment Washed Cotton Twill Cap - Dark Khaki 100% Cotton Made of 100% cotton. One size fits most with adjustable strap closure, fitting up to XL size. Crown measures 3 1/2 inches deep, 6 panels, unconstructed, low profile. Bill measures 2 3/4 inches long, pre curved, same color under bill. Thick, soft and light material.