Flame-resistant and moisture-resistant
Noise Reduction Rating of 29 dB.
3M™ E-A-R™ Classic™ earplugs set the standard in hearing protection as the world's first foam earplugs. Constructed from slow-recovery foam, these low-pressure earplugs are uniquely moisture-resistant.
Still one of the most widely used foam earplugs today, the Classic earplug is an economical, reliable choice in hearing protection and hearing conservation. Slow recovery, low-pressure foam conforms to the shape of the earcanal to help create a comfortable, snug noise barrier. Flame-resistant and moisture-resistant - Noise Reduction Rating of 29 dB.
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™.