Ear Muffs, Ear Muff Style Hard Hat Mounted, Noise Reduction Rating NRR 24 dB, Dielectric Yes, Series Black Hawk, Ear Muff Cup Color Black, Standards ANSI S 3.19 -1974, CSA Class A, For Use With Hard Hats, Ear Muff Cushion Material PVC, Ear Muff Type Rigid, Band Color - Hearing Protection Black, Band Material - Hearing Protection Plastic. This item has been restricted from sale in the following state (s): []