3M™ E-A-R™ Classic™ earplugs set the standard in hearing protection as the world's first foam earplugs.
- Noise Reduction Rating (NRR) of 29 dB. CSA Class AL
- Constructed from slow-recovery foam, these low-pressure earplugs are uniquely moisture-resistant
- Flame-resistant & moisture-resistant
- Test compatible with 3M™ E-A-Rfit™ Validation System
- All are boxes of 400 each (200 pair)