3m 1100 sp earplugs snr 37 db 5 pairs 3m xa007703706 p the 3m 8482 1100 sp earplugs snr 37 db 5 pairs 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 p p these plugs provide excellent comfort with the added benefits of being moisture resistant and can therefore be cleaned up to three times making that an extremely economical option 3m xa0077