Relieves painful ear discomfort, clogging, popping and hearing loss with soft CeramX filters that slow air-pressure changes during takeoffs and landings. Developed by the House Ear Institute, the nation's leader in ear research. Recommended by doctors and tested by U.S. Navy pilots. A must for anyone who flies with a cold, sinus condition or allergies. Each pair of disposable Earplanes� is good for one outbound and one return flight, disposable. Earplanes� have brought relief to hundreds of thousands of air travelers worldwide. For adults 12 and older. 1 pair.