- 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
- Noise Reduction Rating (NRR)*: 29 dB. CSA Class AL
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.