3M Peltor Optime 98 Over-the-Head Earmuffs H9A, 25 dB NRR, Case/10

For noise levels up to 98dBA, these Over-the-Head Earmuffs from Blue Monster Prep deliver effective protection for mid-range environments comfortably. Features Lightweight - headband Ideal for environments including factories, sheet metal works, schools, printing and textile operations and power equipment Dual low-pressure bands improve comfort Broad foam cushions provide low surface pressure Ideal for noise levels up to 98dBA Noise Reduction Rating (NRR)*: 25 dB ANSI S3.19-1974/CSA Z94.2 Includes 10 pairs of Earmuffs *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.