3M Optime 105 neckband earmuffs features low-profile earcups that fit well with most helmets, featuring double-shell technology for effective hearing protection. Patented Twin-Cup™ design has soft, foam-filled earmuff cushions. Behind the head design allows for easy use with hard hats. Color-coding for compliance sighting. Also available in 3M Optime 105 headband earmuff and 3M Optime 105 cap mount earmuff For noise levels up to 105 dBA, these 3M Optime 105 neckband 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 AL *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™. For more information visit www.3m.co.za
