Dewalt, Ratchet Suspension, Yellow, Hard Hat, Ratchet Nylon Suspension To Easily Modify Fit While Wearing Hard Hat, Lightweight Polyethylene With Impact Absorbing Ridges, Coolmax Browband Is Washable & Reusable, Universal Accessory Slots Fit Most Cap Mounted Earmuffs, Meets ANSI Standard Z89.1 2003 Type 1, Class E & G.