The workplace isn't always the safest environment. That's why this deluxe headgear is a must. High-strength thermoplastic crown protector provides impact resistance. Five-position crown strap and adjustable ratchet suspension help provide a precise fit. No snaps, cams or bands needed. Must be used with 3M faceshields only (sold separately). Test compatible with 3MTM E-A-R fitTM Validation System.