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 Hear Plugs High Fidelity Ear Plugs have a unique acoustic attenuation filter designed to reduce noise evenly and maintain the full spectrum of sound to replicate the resonance of the natural ear canal. This patented technology provides an undistorted perception of speech music and ambient sound while reducing harmful noise. These noise cancelling earplugs carry a noise reduction rating (NRR) of 12 decibels helping to protect your ears during concerts band and orchestra practices motor sports and other loud events. Mack’s premium aluminum travel case is included for on-the-go convenience. Attach to your keys or backpack so you never get caught without your Mack’s Ear Plugs again! Easily stores one pair of Mack’s earplugs. Screw on cap and rubber seal helps keep the earplugs clean and protected. Hear the music not the muffle. Reduce the harmful noise while enjoying the full range of sound music and communication with Mack’s Hear Plugs High Fidelity Earplugs.