Heavy-duty helmet provides excellent protection against nearly all workplace hazards. Phenolic construction withstands elevated temperatures. Easy-adjust pin lock suspension allows you get the right fit. Ideal for use in steel mills and other heavy industry surroundings. Hat: Standard Size 6 1/2 - 8—Non-slotted. Style: Hat; Material(s): Phenolic; Adjusting Method: Fas-Trac Ratchet; Suspension: Ratchet.