3M E-A-R soft Yellow Neons Earplugs Refill NRR 33dB 391-1004 CSA Class AL (500 Pairs)

Special, soft and smooth foam formulation with the highest noise reduction rating available. Regular size fits most ear canals. 3M E-A-R 391-1004 CSA Class AL (500 Pairs) Shaped, self-adjusting foam provides a comfortable, low-pressure seal. Non-irritating, dermatologically safe foam. Soft foam plugs are easy to roll down and insert, then expand within the ear canal for maximum comfort. NRR 33dB. ANSI S3.19; CSA Class AL.