Ear Planes negate the painful effects of cabin pressure changes with a pressure regulating Ceramx™ filter. They relieve ear discomfort, clogging and popping with a filter that regulates air pressure naturally. The Ear Planes are safe, comfortable, and disposable. Additionally, they are soft, hypoallergenic, latex free, and reduce harsh noise. Each pair is good for one round-trip. Ear planes are developed by The House Ear Institute and tested by U.S. Navy pilots. One adult sized pair per box.