Bullard Fire Helmet, Cap Style (Black)Wildland Fire Helmet, Cap, Black, Thermoplastic Shell Material, Fits Hat Size 6 1 2 to 8, Nomex(R) Postman Slide Chin Strap, 6 Point Sure Lock(R) Ratchet Suspension, Standards NFPA 1977 2005 and ANSI ISEA Z89. 1, Type I, Class E&G Key Features Chin Strap Nomex(R) Postman Slide Suspension 6 Point Sure Lock(R) Ratchet Style Cap Standards NFPA 1977 2005 and ANSI ISEA Z89. 1, Type I, Class E&G Fits Hat Size 6 1 2 to 8