High-density polyethylene (HDPE) shell designed with (5) raised channels running across top of helmet for strength. Features 6-point suspension system, wide polyester textile webbing harness, unique 3D Harness height adjustment, Revolution™ Wheel Ratchet and Chamlon™ sweatband. Universal slots to fit various accessories. Non-vented. Meets ANSI/ISEA Z89.1-2014, Type I, Class E requirements. Also meets ANSI requirements for Reverse Donning and Lower Temperature [LT].