The bulk of this cap is made from strong, 100% cotton twill material, with a sweat-resistant hem and reinforcing sewn around the inside. The brim is plastic (not cardboard), and covered in soft fawn-coloured suedette on top with navy covered twill beneath (to reduce glare on the eyes). The size-adjusting strap has a metal buckle, and metal sleeve for tucking away the end neatly. It is heavily embroidered with the crew position in cotton thread. The quality is excellent as is the price.