3M E-A-R Classic Disposable Foam Shooting Sleep Ear Plugs Noise Reduction NRR 29
However, 3M makes no warranties as to the suitability of the NRR for this purpose. Refer to applicable regulations or guidance on how to adjust attenuation label values. 3M 312-1201 E-A-R Classic Disposable Yellow Foam Ear Plugs Noise Reduction 29dB.