Constructed of durable injection-molded high-density polyethylene. Compatible with faceshields, earmuffs and welding helmets. This hard hat provides versatile head protection with reinforced rib design in one lightweight, balanced hard hat. The 6-point nylon band suspension system has been engineered for optimum comfort. These hard hats meet all applicable OSHA regulations and ANSI Z89.1, Class E & G (formerly Class A & B) requirements.