The 3M E-A-R Classic Earplugs are made from a soft energy absorbing polymer foam which provides excellent hearing protection and all day comfort. Ideal for use where noise is a problem either in work or leisure activities. The 3M E-A-R Classic Earplugs provide excellent comfort with the added benefits of being moisture resistant and can therefore be cleaned up to 3 times making that an extremely economical option. Attenuation: SNR28dB, H30dB, M24dB, L22dB.