Relieves Air Discomfort with the Exclusive CeramX Filter Reduces harsh noise Drug free Safe, comfortable, disposable Soft, hypoallergenic latex free silicon Performance for smaller ears guaranteed Noise reduction rating: 20 decibels. When used as directed The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30. (Higher number denote greater effectiveness. ) Suggested Use: Before inserting, pinch nose and blow to clear your ears. For best results, always insert EarPlanes one hour before landing. Remove after landing and when the cabin door is opened. Chronic sufferers may also insert EarPlanes just before takeoff. EarPlanes may be removed when the airplane reaches maximum altitude and reinserted one hour before landing. For maximum results, use your opposite hand to pull the top of your ear upward. Insert the ribbed end and turn like a corkscrew until snug. UPC: 794503210010 Weight: 0.27 lbs