3M™ Peltor™ Optime™ 101 over-the-head earmuffs feature a stainless steel headband for consistent force and effective hearing protection. Benefits •For noise levels up to 101 dBA •Stainless steel headband distributes weight for low-pressure fit. •Earcup pivot points that tilt for optimum comfort and efficiency. •Liquid/foam filled earmuff cushions •Noise Reduction Rating (NRR)*: 27 dB. CSA Class A.