The 3M Peltor X5 Ear Defenders are designed to offer protection against extremely high noise levels. For example airports, quarrying or paper mills. Unparalleled attenuation (SNR 37dB) as a result of an optimum combination of specially formulated foam technology and a newly designed spacer and cup. Despite the larger cups the product remains relatively lightweight with excellent balance and wearer comfort. Simple colour coding: black, for extremely high attenuation in demanding environments. Attenuation Headband: SNR=37dB, H=37dB, M=35dB, L=27dB