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 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 AL
Applications: Automotive, General Manufacturing, Sub Applications, Military Maintenance, Military Maintenance, Repair and Operation (MRO), Mining, Oil & Gas, Pharmaceutical, Repair and Operation (MRO), Transportation
*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.