Otto Caps Brushed Bull Denim Low Profile Cap - Dark Green 100% Cotton Made of 100% cotton. One size fits most with adjustable strap closure, fitting up to 7 1/2. Crown measures 3 1/2 inches deep, 6 panels, constructed, low profile. Bill measures 2 3/4 inches long, stiff and pre curved, same color under bill. Thick, soft and light material.