Sleep peacefully without any disturbances with Mack's Pillow Soft earplugs. The earplugs are manufactured from mouldable silicone to ensure the best fit possible and comfort. • America's #1 selling mouldable silicone earplugs*. • The Doctor's choice for sealing out water and reducing noise. • The original silicone earplugs with a noise reduction rating 22 decibels (when used as directed). • Snore proof. • Helps relieve flying discomfort. • Waterproof and helps prevent swimmer's ear. • Swim, sleep, study, shower, work, travel, sports, loud events, flying discomfort, etc.