U.S. Plastic Corporation E-A-R Classic Regular, Plus & Small Earplugs 464

3M E-A-R Classic earplugs set the standard in hearing protection as the world's first foam earplugs. Constructed from slow-recovery foam, these low-pressure earplugs are uniquely moisture-resistant. They test compatible with 3M E-A-Rfit Validation System. They are flame-resistant and moisture-resistant. The Classic Plus earplugs are slightly longer than regular E-A-R Classic earplugs to fit deeper into the ear canal and provide higher noise reduction. The E-A-R Classic earplugs have a Noise Reduction Rating (NRR) of 33 dB. CSA Class AL. The Classic Small earplugs are slightly smaller in diameter for a comfortable fit in smaller ear canals. The Classic Small earplugs have a Noise Reduction Rating (NRR) of 29 dB. CSA Class AL. The Value Pack Dispenser gives you the best value with 200 pair of bulk earplugs loose in each dispenser box. The regular Classic earplugs in the Value Pack Dispenser have a Noise Reduction Rating (NRR) of 29 dB. CSA Class A. All are boxes of 400 each (200 pair).