Shell is constructed from high-density polyethylene (HDPE). Low-profile design with rain trough on sides and back of helmet channel moisture away. Universal accessory slots fit cap-mounted earmuffs and chin straps. Ratchet suspension is easy to adjust and allows wearer to modify the fit. Soft brow pad is replaceable and washable. Meets ANSI Z89.1-2009 standards, Type I, Class C, G and E.