Ear Muffs, Earmuff Style Multi-Position, Noise Reduction Rating 30 dB, Dielectric Yes, Cushion Material Foam, For Use With Bump Caps, Faceshields, Hard Hats, Kit, Welding Helmets, Cup Color Black, Series VeriShield(TM) 100, Earmuff Type Rigid, Standards CSA Class AL, Replacement Pad Grainger Part Number 55JR11, Band Color Black, Band Material Plastic, Cup Material ABS