March 13, 2013 – 3M says its Peltor X Series earmuffs are its first to provide Noise Reduction Rating (NRR) values up to 31 decibels (dB). Built with foam cushion technology and ear cups that tilt for comfort and efficiency, the Peltor X Series earmuffs combines a lightweight design with soft, wide ear cushions that improve attenuation and create a better seal. The series also incorporates an electrically insulated twin headband design that reduces heat buildup. The earmuffs are available in both standard headband and hard hat-attached models, and are made with easy-to-replace cushions and inserts.