Maximum comfort. Hypoallergenic original formula. Helps prevent swimmer's ear. Read directions and warnings on back of box before using. Snore proof. Water proof. No doctor recommended. Swim, sleep, study, shower, work, travel, sports, loud events, flying discomfort, etc. Safe for use with ear tubes. The original & exclusive formula made with non-toxic, hypoallergenic silicone putty. Noise reduction rating 22 decibels (when used as directed). The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (high numbers denote greater effectiveness). Federal law prohibits removal of this label prior to purchase EPA label required by USEPA regulation 40 CFR part 211 subpart B. CE listed. www.MacksEarplugs.com. Recyclable package. Made Sweden.