【Professional Passive Noise Isolation Technology】Effective, consistent acoustic seal for a more immersive listening experience from BJKING's unique double foam design noise blocking. The noise isolation of the headphones is achieved by using acoustic foam pads in the ear cups to form a secure seal. Protect your hearing while shooting, woodworking, sporting events, mowing, or in other noisy environments, such as airports and construction sites.

【Replaceable Ear Cushions-Keeps ear muffs clean】Insert design vs. glue allows for quick and easy changing of ear cushions, just pop out the old cushions and snap in the new ones. Replace gel earcups on a hot summer day and let your ears breathe deeply. 【Authoritative certification and professional R&D】Noise Suppression science is more about biology. There are so many shapes and sizes of the human ear to be studied, measured, and tested. We’ve scanned hundreds in the pursuit of better fit and comfort to ensure optimal noise blocking. Our hearing protection earmuffs are Certified by ANSI S3.19 and CE EN 352-1 standard. (NRR 28 dB rating /SNR 33db rating.)

【Ergonomic Design】Wide ear cups with ultra-soft cushioned ear pads and the headband boasting a thick layer of padding help them fit snugly around the ears with no pressure. And more importantly, made with an adjustable headband, the headpiece extends or contracts and flexes to accommodate all head sizes and shapes. (NOTE: We also offer an EXTRA LARGE size for larger heads. If you ever have any problems at all, reach out to us and we will make things right 7X24.)