Product Description - Foam disposable earplugs. - 500 pairs in a bag. - Conforms to EN352-2:2002. - SNR 39db, H=38, M=37, L=34 EN 352-2:2002 - Hearing Protectors - EarPlugs SNR = 39. dB Low frequency = 34. dB Medium frequency = 37. dB High frequency = 38. Db
