Flents Quiet Contour Ear Plugs, Contour to Ear, NRR 33 (50 Pair)

Smooth Foam for A Soft, Ultimate Fit Noise Reduction Rating NRR33 Noise Reduction Rating: 33 Decibels (when used as directed). The range of noise reduction ratings for existing Hearing protectors is approximately 0 to 30 (higher numbers denote greater effectiveness) 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 33 decibels (dB]. The level of noise entering the ear is approximately equal to [92 dB(A) - 33] 59 dB(A).

HEARING PROTECTION: for Sleeping, Loud Noise, Concerts, Construction, Heavy Machinery, Mic, and other loud environments. Also great for creating silence CONVENIENT: Jar holds 50 Pairs, Easy to Take Anywhere COMFORTABLE FIT: Smooth, Comfortable, Extra soft and extra light foam that tapers to your ear canal for a custom fit 33 DECIBEL NRR (Noise Reduction Rate)