Ear Muffs, Earmuff Style Behind-the-Neck, Noise Reduction Rating 27 dB, Dielectric No, Cushion Material ABS, Polyurethane, For Use With Face Shields, Headgear, Includes Head Strap, Cup Color Black/Chartreuse, Series X, Standards CSA Class AL, Replacement Pad Grainger Part Number 21DE27, Cup Material ABS, Features Earcup Pivot Points, Weight 0.3 lb, Electrically Insulated No