Ezy Dose Pro-techs, Seal-rite, Silicone Ear Plugs, Green, 6 Pair & Case

Noise Reduction Rating NRR21Conforms to Your Ear to Seal the Ear Canal EntranceGreat for Kids and Smaller Ear CanalsSeal-Rite® Silicone Ear Plugs help to seal out water when worn properly. Great for swimming. The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (higher numbers denote greater effectiveness).Noise reduction rating: 21 Decibels (when used as directed)Information Required by EPA: The level of noise entering a person's ear, when a hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR. Example: (1) The environmental noise level as measured at the ear is 92 dBA. (2) The NRR is 21 decibels (dB]. (3) The level of noise entering the ear is approximately equal to [92 dB[A] - 21] 71 dB(A).