•For noise levels up to 101 dBA •Stainless steel headband provides consistent force •Liquid/foam filled ear cushions for comfortable long-term wear •Colour-coded for compliance sighting •Noise Reduction Rating (NRR)*: 24 dB. CSA Class A •3M is Leading the Advancement of Hearing Conservation 3M™ Peltor™ Optime 101 Cap-Mount Earmuffs H7P3E fits well with most helmets, eyewear and other safety equipment. 3M™ Peltor™ Optime 101 Cap-Mount Earmuffs H7P3E help provide effective hearing protection and are designed for noise levels up to 101 dBA. It features a universal mounting attachment that fits most hard hats and colour coding for compliance sighting.