Classic foam earplugs set the standard in hearing protection as the world's first foam earplugs. Constructed from slow-recovery foam, the disposable earplug
- Still one of the most widely used foam earplugs today, the Classic earplug is an economical, reliable choice in hearing protection and conservation.
- 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.
Hearing Protection Style: Roll Down Foam
Noise Reduction Rating: 29 Decibel
ANSI S3.19-1974; CSA Class AL