Noise Reduction Rating: 32 decibels (when used as directed). No. 1 doctor recommended brand for getting a good night's sleep with a snoring spouse. Free travel case included. Extreme comfort earplugs. Blocks out snoring spouses, roommates, neighbors, travel companions, etc. Unique hollow end maximizes comfort, especially during sleep. The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (high numbers denote greater effectiveness). CE listed. www.MacksEarplugs.com. Recyclable carton. EPA: Federal law prohibits removal of this label prior to purchase. Label required by USEPA regulation 40 CFR Part 211 Subpart B. Made in Sweden.