America's #1 selling earplugs, Mack's pillow soft earplugs are the original silicone. Help's prevent swimmers's ear because they are water proof and snore proof. Swim, sleeo, study, shower, work, travel, water sports, loud events, even flying discomfort. Mack's Pillow Soft earplugs have a noise reduction rating of 22 decibels when used as directed. Contains two pair of earplugs.