Ear Plugs, Soft Foam, NRR 33
4 pair and case. Quality Guaranteed: This Topcare product is laboratory tested to guarantee its highest quality. Your total satisfaction is guaranteed. 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). EPA. Information Required by EPA: The level of noise entering a person's ear, when 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 33 decibles (dB). (3) The level of noise entering the ear is approximately equal to [92 dB(A) - 33] 59 dB(A). Made in USA.
Warning
Contains: Keep earplugs away from infants and small children as they may get caught in the windpipe and create a choking hazard. For noise environments dominated by frequencies below 500 Hz the C-weighted environmental noise level should be used. Improper fit of this device will reduce its effectiveness in attenuating noise. Consult the enclosed instructions for proper fit. Although hearing protectors can be recommended for protection against the harmful effects of impulsive noise, the Noise Reduction Rating (NRR) is based on the attenuation of continuous noise and may not be an accurate indicator of the protection attainable against impulsive noise such as gunfire.
Directions
1. With clean hands, slowly roll plug into a thin, crease-free cylinder. 2. While compressed, insert plug into ear canal. Fitting is easier if outer ear is pulled outwards and upwards during insertion. 3. With fingertips, hold plug in place until it begins to expand and block noise. The degree of noise reduction depends upon proper insertion.