3M Optime 95 Beige And Black Helmet Mount Earmuffs;

3M Peltor Optime 95 Cap-Mount Earmuffs feature a universal mounting attachment that fits most hard hats. 3M Peltor Optime 95 cap-mount earmuffs feature a universal mounting attachment that fits most hard hats. For noise levels up to 95 dBA.Noise Reduction Rating (NRR)*: 21 dB. CSA Class B.*The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR according to the authority in your juristiction or reduce by 50-Percent for estimating the amount of noise reduction provided.3M is Leading the Advancement of Hearing Conservation.