3M(TM) E-A-Rsoft(TM) SuperFit(TM) foam earplugs seal the earcanal with soft, slow-recovery foam for excellent noise reduction and comfort. Orange fitting ring provides a guideline for proper fitting and visual compliance check. The soft, pliable foam on this uncorded foam earplug features an orange fitting ring that provides a guideline for proper fitting. Earplugs are easy to roll down and insert, then expand within the earcanal for a comfortable, secure fit. (bul) Refill container for One Touch(TM) dispenser. One gentle turn delivers uncorded foam earplugs. (bul) Regular size fits most earcanals. (bul) Noise Reduction Rating (NRR)*: 33 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).