80529-12077 3M E-A-R Classic SuperFit 30 Uncorded Earplugs 312-4201

The E-A-R(TM) Classic(TM) SuperFit(TM) 30 orange fitting ring" provides a guideline for proper fitting and quick visual compliance check.. Another innovation from 3M(TM) E-A-R(TM), the Classic(TM) SuperFit(TM) 30 has a built-in visual check - the orange fitting ring. If the ring is visible after insertion, refitting is recommended for best hearing protection. (bul) Poly bag keeps each pair of earplugs clean before use. (bul) Conforms to the shape of the earcanal to help create a comfortable, snug noise barrier (bul) Slow-recovery earplug foam is flame-resistant and moisture-resistant (bul) Noise Reduction Rating (NRR)* 30 dB. CSA Class AL. (bul) Test compatible with 3M(TM) E-A-Rfit(TM) Validation System. *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(TM).