Mack's Silicone Putty Earplugs are easily moldable to seal your ear from sound and water. Prevent discomfort from increasing ear pressure during air travel by sealing your ear with these custom moldable earplugs. The soft silicone plug molds to the unique contours of any ear, making it the perfect solution to protect your ears from discomfort caused by air travel, snoring, aquatic activities and more.