The X-Series earmuffs are 3M’s latest advancement in hearing conservation. New technologies in comfort, design and protection all come together in this groundbreaking earmuff line. These lightweight, lower-profile earmuffs are designed for protection against low-to-moderate level industrial noise and other loud sounds. FEATURES: •The wire headband offers consistent pressure over prolonged wearing periods • Earcup pivot points tilt for optimum comfort and efficiency • Replaceable ear cushions and foam liners (hygiene kit HYX2) • Hard hat attached hearing protection with Noise Reduction Rating (NRR) of 25 dB for moderate to high noise exposure • Fits a wide range of industrial safety hard hats, including 3M H-700 Series Hard Hats (sold separately) Attaches directly to many hard hats without an adapter • 3M Catalog# X2P3E