Push-Ins Ear Plug w/ Cord 100 Pair Per Box by 3M, MS-92160

These push in ear plugs meet ANSI S3. 19-1974 standards. NRR rating is 28._x000D_ Caution _x000D_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 impulse 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 impulse noise, such as gunfire. Improper fit of this device will reduce its effectiveness in attenuating noise._x000D_ Ear plugs must be worn at all times in noisy surroundings for proper protection. _x000D_The level of noise entering a person’s ear, when hearing protection is worn as directed, is closely approximated by the difference between the A-weighted environmental level and the NRR.

NRR 28 Push-Ins. 100 Pair Per Box. Flame retardant. Moisture resistant will not absorb moisture and swell. Pillow Packs may be reused for convenience and storage. Fast Shipping so buy with confidence.