1.THE ORIGINAL AND #1 SELLING - 's original and #1 selling moldable silicone ear plugs. Provides , non-toxic, non-allergenic waterproof protection and protects hearing from loud noises. 2.THE ULTIMATE IN EARPLUG COMFORT - Mack's soft moldable silicone putty molds very comfortably to the unique contours of any ear. These multi-use earplugs are great for sleeping, snoring, swimming, studying, bathing, travel, loud events, concerts, flying discomfort, motorcycles, etc. Lab tested and proven to help relieve airplane ear pressure and pain due to flying. 3.#1 BRAND FOR SNORING - Mack's is the #1 Doctor Recommended Brand to get a good night's sleep when sleeping with a snoring spouse. Mack's Earplugs have been saving marriages since 1962. 4.#1 BRAND FOR PREVENTING EAR INFECTIONS - Mack's is the #1 Doctor Recommended Brand to help prevent swimmer's ear infections (otitis externa). Safe for use with ear tubes. Provides protection after ear surgeries. Also helps prevent Surfer's Ear (exostosis). Mack's are so trusted, they are the Official Earplugs of Swimming!