Mack's original "Pillow Soft" Snoozers silicone ear plugs: • The original silicone ear plugs. • Snore proof. • Helps relieve flying discomfort. • Waterproof. • Helps prevent swimmers ear. • Noise reduction rating 22 decibels (when used as directed). • Swim, sleep, study, shower, work, travel, sports, loud events, flying discomfort, and more. We recommend using each pair between 3 and 5 times at your own discretion.