Exposure to loud music from concerts jam sessions and nightclubs can lead to permanent hearing loss. In fact a single exposure to dangerous noise levels can cause irreversible hearing loss and debilitating conditions like tinnitus (ringing in the ears). Mack’s Acoustic Foam Earplugs help protect your hearing from potentially damaging noise levels so you can fully enjoy loud events while being safer and more comfortable. Mack’s Acoustic Foam Earplugs provide a noise reduction rating of 20 decibels protecting your ears during concerts jam sessions nightclubs and loud events. Mack’s travel case is included for on-the-go convenience. Easily stores one pair of Mack’s Earplugs. When you rock out rock out with Mack’s Acoustic Foam Earplugs.