Feature durable, injection-molded, high-density polyethylene (HDPE) shell designed with accessory slots to accommodate many add-on features. Fas-Trac® III ratchet suspension: 4-point webbed system with a large knob for easy adjustment. Includes sweatband and adjustable crown straps. Meets ANSI/ISEA Z89.1-2014, Type 1, Class E and voluntary standard for low temperature [LT] and reverse donning. Meets CSA Z94.1-2015 (Class E) with 1-Touch and Fas-Trac III suspensions.