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.Also available in a corded version if required. SNR = 31dB, EN 352-2:2020