Sleep Better Naturally Excellent for: Sleeping Power Tools Lawn Mowing Car Racing Concerts Rifle Range Studying Protects Hearing by Reducing Harmful NoiseNoise Reduction Rating: 29 Decibels (when used as directed).The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (higher numbers denote greater effectiveness)Prevent future hearing problems by using proper hearing protection today. Suggested Use: For effective and comfortable use: With clean hands, roll plug back and forth between fingers into a tight cylinder Immediately insert compressed plug into ear canal;Hold plug in place until it expands to give a snug, comfortable fit UPC: 023185081459 Weight: 0.44 lbs