- Noise Reduction Rating (NRR) 29 dB
- Expands slowly to fit most ear canals
- Soft foam comfortable to wear over extended time
- CAUTION: 3M strongly recommends fit testing of hearing protectors. Research suggests that many users will receive less noise reduction than indicated by the NRR due to variation in hearing protector fit, fitting skill and motivation of the user. If the NR
- Non-irritating to the skin