Ear Muffs, Earmuff Style PAPR-Compatible, Noise Reduction Rating 24 dB, Dielectric No, For Use With M-100 and M-300 Products, PAPR-Compatible, Cup Color Orange, Series M-100, M-300, Standards CSA Class A, Replacement Pad Grainger Part Number 255L31, Weight 0.5 lb, Electrically Insulated No