These E-A-R Classic SuperFit earplugs feature an orange fitting ring that provides a guideline for proper fitting and a quick visual compliance check. Packaged in convenient refill bottles to fit your one Touch dispenser 391-1000. The fitting ring provides a guideline for proper insertion and a quick visual compliance check. Packaged in convenient refill bottles to fit your one Touch dispenser 391-1000. - conforms to the shape of the earcanal to help create a comfortable, snug noise barrier.

Slow-recovery earplug foam is flame resistant and moisture resistant. Noise reduction rating (NRR) - 30dB. Test compatible with 3M E-A-Rfit 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.