Snug Fit: Bullet shape matches contours of your inner ear to ensure maximum noise reduction and hearing protection. Used to provide a quiet environment and block out loud noises, the self-adjusting foam quickly expands to fit the ear canal. Noise Suppression: Protecting your ears from exposure to hazardous noises around you, Our One-time/Disposable Foam Ear Plugs offer one of the highest noise reduction rating of 32dB; One size fits all, sold in a pack of 100 pairs. Corded: Made from non-irritating polyurethane and sound-absorbing PU foam materials bring you better noise reduction performance while promoting hearing safety in the workplace; The corded pairs reduce the chance of losing your earplugs between projects. Packaging: These plugs are individually packed in pairs in a convenient dispenser box making them easily portable; The plugs not only effectively block out noise, but the convenient packaging also ensures hygiene protection. Certified: Loud noise, continuous or intermittent, can cause permanent damage to the ear and result in hearing impairment. Our foam earplugs act by absorbing sound and echo and are independently tested and certified to NRR 32 (ANSI S3.19) and CSA Class AL.