Ear Muffs, Earmuff Style Hard Hat-Mounted, Noise Reduction Rating 25 dB, Dielectric Yes, Cushion Material Foam, Compatible Manufacturer Model Number H700, For Use With Hard Hats, Cup Color Black/Chartreuse, Series X, Earmuff Type Foldable, Standards CSA Class A, EN 397:2012, Replacement Pad Grainger Part Number 21DE27, Cup Material HDPE, Features Arms Maintain Proper Shape when Clicking In/Out, Weight 0.2 lb, Electrically Insulated Yes