ABS, PU leather Imported The ultrathin ear muffs with thickened noise-dampening foam offer a SNR 33dB rating and block out noise by a great amount, ANSI S3.19 (US) certified Ideal to block out noises caused by shooting, hunting, airport, sports events, studying, woodworking projects and lawn care, extremely suitable for operating heavy machinery or landscaping business Upgraded metal headband ensures long-term durability; Generous space inside the ear cups ensure breathability and comfortability, provide a tight sound-proof seal to silence your world “In A Snap” Designed with retractable stainless steel and 360° rotatable ear cups can be adjusted to fit most sizes from kids to adults Low profile with trustworthy quality makes it lightweight but sturdy to ensure a longer duration; a great gift choice ProCase Professional Safety Ear Muffs are made with noise-dampening sponge material and offer a SNR 36dB/NRR 32dB rating which certified by ANSI S3.19 (US), efficiently filter out sounds to a minimum for hearing protection. With pressure diffuser technology, the padded headband reduces the pressure and provides your maximum comfort without adding much weight or bulks. Adjustable headband and soft ear cups ensure snug fit for various head size. It is perfect for gun range, hunting, manufacturing, yard work and etc.