Industrial machinery, roadway maintenance and construction vehicles, manufacturing equipment, recreational vehicles and some power tools can expose your ears to damaging levels of noise. Protect your hearing with a pair of 212 Performance earmuffs. Made from nylon and soft polyurethane foam padding, these ear muffs are lightweight and entirely metal free. The full coverage ear cups are fit with polyurethane foam pads to fully enclose your ears for a complete seal to block out sound. The ear cups feature 360-degree articulation and a 12-point ratcheting height adjust for a custom fit on most head sizes. The padded headband is flexible, allowing it to bend and adjust to fit around smaller hard hats and uniform caps. Tested to provide a 29 dB Single Number Rating (SNR) level of noise reduction.