Replacement Ear Muff Pad Kit Includes (2) Foam Inserts (2) Replacement Ear Cushions Compatible with Grainger Part Number 21DE15 21DE20 Cushion Material Foam Polyurethane PVC Noise Reduction Rating 24 dB Compatible with Manufacturer Model Number X2A X2P3E Compatible with Brand 3M PELTOR Dielectric No Compatible with Series X-Series X2 Standards CE Approved Cushion Color Black Electrically Insulated Yes Insert Color Black Insert Material Foam