3M Peltor Optime 98 is versatile, over-the-head earmuffs featuring a stainless steel headband for consistent force and effective hearing protection.A versatile, over-the-head earmuffs featuring a stainless steel headband for consistent force and effective hearing protection. - Stainless steel construction resists bending and warping. - Earcup pivot points tilt for optimum comfort and efficiency. - Ultra light with foam filled earmuff cushions. - Color-coding for compliance sighting. - Noise Reduction Rating (NRR)*: 24 dB. CSA Class A. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation.