Ear Muffs, 29 dB Noise Reduction, Black/Red, Behind-the-Neck Band Position, ABS

3M™ Peltor™ Optime™ 105 behind the head earmuffs features Low profile earcups that fit well with most helmets, feature double-shell technology for effective hearing protection. For noise levels up to 105 dBA, these behind the head earmuffs feature double-shell technology to provide effective hearing protection - patented Twin-Cup(TM) design has soft, foam filled earmuff cushions. Behind the head design allows for easy use with hard hats. Liquid/foam filled earmuff cushions. Color coding for compliance sighting. Noise reduction rating (NRR)- 29 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™. Peltor™ 7000009664, 29 dB Noise Reduction, Black/Red, Behind the Head Band Position, ABS, Specifications Met: CSA Class AL