3M 1100 Ear Plug Refill Pack 500's

1100 Series Ear Plugs Dispenser Refill Pack. The comfortable foam plugs Uncorded version 3M 1100 are soft, disposable, polyurethane foam earplugs offering excellent protection. * Soft polyurethane foam offers maximum wearer comfort * Smooth dirt-resistant surface. * Tapered design fits most ear canals. Attenuation: SNR=37dB, H=37dB, M=34dB, L=31dB