SNR 33db Silicone safety Ear plugs 1.CE 2.SNR:33db,PU 3.custom made,option: ... carbon,environmental protection *slow rebound SNR33db more than 30 seconds*safety and soft*washable: water to clean will be resuable earplugProduct ... effective.SNR33db ,earplug can be washed with water, reuse. Ear plugs box Direction of UseTake out the earplug, with the index ...