For noise levels up to 105 dBA Proprietary 3M™ Twin-Cup™ design has soft, foam-filled earmuffs for enhanced hearing protection Stainless steel headband distributes weight for low-pressure fit Liquid/foam filled earmuff cushions for comfortable long-term wear Earcup pivot points that tilt for optimum comfort and efficiency Colour-coded for compliance sighting Noise Reduction Rating (NRR)*: 30 dB. CSA Class AL 3M is Leading the Advancement of Hearing Conservation
