American DOT certification.High-strength fiberglass shell.Five-layer FRP material, high strength and impact resistance, weighing only 915g, the material has good corrosion resistance, which can make the surface of the helmet smooth and translucent, refuse to wipe the color, and have a longer service life.American standard vintage double D buckle.The double D buckle is currently recognized as a safe buckle in the world, and the “two in and one out” fastening method can stably fix the hat itself on the knight’s head.Retro Suede lining is made of deerskin velvet fabric, soft to the touch, breathable and not stuffy, equipped with a detachable and washable design, the interior adopts luxury bronzing logo technology, and the texture is improved.