Noise Reduction: Offers professional noise reduction with an effective NRR (Noise Reduction Rating) of 32dB. Features deeper ear protection for a sealed soundproof area. Complies with American and European Union hearing protection standards (ANSI S3.19-1974, CE EN-352). Comfort and Weight: Enhanced comfort with high-density sound-absorbing cotton padding on the cushions and a skin-friendly artificial leather exterior. Weighs only 270 grams/9.5 ounces, providing long-term comfort. Includes a carry bag for convenient storage. Design: Features an upgraded headband different from other safety earmuffs on the market. Made of TPE + iron wire for a closer fit to the human head. The built-in sturdy iron wire offers excellent bending durability and longevity. Adjustability: Adjustable size to fit different adults. The retractable stainless steel at the headband end can easily slide for a personalized fit. Earmuffs can be flexibly rotated 360° and adjusted for an exceptional experience. Uses: Suitable for use in noisy environments such as mowing, woodworking, racing, shooting, drumming, power tools usage, airplanes, trains, etc. Also suitable for individuals with autism.