Replacement Ear Muff Pad Kit Includes Foam Inserts Replacement Ear Cushions Compatible with Grainger Part Number 21DE18 21DE23 52JH59 Cushion Material Foam Polyurethane PVC Noise Reduction Rating 31 dB Compatible with Manufacturer Model Number X5A X5P3E X5P5E Compatible with Brand 3M PELTOR Dielectric No Compatible with Series X-Series X5 Standards CE Approved Cushion Color Black Electrically Insulated Yes Insert Color Black Insert Material Foam