The 3M E-A-R UltraFit 20 Ear plug is ideal in lower noise levels. Correctly matched to the noise level it allows conversation and background music to be heard whilst helping to protect the user from hearing loss. Ear plug is moisture resistant, reusable and comes with a cord. Attenuation: SNR = 20dB, High Frequency = 25dB, Medium Frequency = 17dB, Low Frequency = 10dB. PPE - Hearing ProtectionGBP147270