Flents Super Sleep Comfort Foam Ear Plugs/Earplugs | 10 Pair | Case Included | NRR 29 | Made in The USA

Noise Reduction Rating - NRR 29 Decibels (when used as directed) Smooth Foam for a Soft, Comfortable Fit 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: The environmental noise level as measured at the ear is 92 dBA. The NRR is 29 decibels (dB). The level of noise entering the ear is approximately equal to [92 dB[A] - 29] 63 dB(A). The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (Higher numbers denote greater effectiveness).

Noise Reduction Rating - NRR 29 Decibels (when used as directed) Smooth Foam for a Soft, Comfortable Fit The environmental noise level as measured at the ear is 92 dBA. The NRR is 29 decibels (dB). The level of noise entering the ear is approximately equal to [92 dB[A] - 29] 63 dB(A).