3M ID  XH001651187 

3M  Peltor  Optime  105 over-the-head earmuffs feature double-shell technology to provide effective hearing protection.

Effective hearing protection for noise exposures up to 105dBA

Double-shell technology boosts its noise blocking ability

Durable stainless steel headband resists bending and warping

Noise Reduction Rating (NRR) of 30 dB*, highest available in over-the-head style earmuffs

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