3M™ PELTOR™ CH-5 High Attenuation J11 NATO Plug Headset Headband Format Earmuff, 37dB (Class 5) MT73H450A-86 (Each)The 3M Peltor CH 5 brings innovative technology and design helping protect the wearer againts the highest noise levels and hazardous sounds. With its robust construction, it is designed to cope with rough and extreme environments. The High Attenuation Headset CH 5 provides one of the highest NRR values on the market (NRR 31dB). When working near noise hazards, such as in proximity to generators or turbines, this headset provides professional