With earplugs for in an airplane, you can protect your ears from large air pressure differences. When the airplane takes off and descends, you may experience problems with your ears due to a difference in air pressure. These earplugs have a special filter that regulates the air pressure. In addition to protecting you from air pressure, the earplugs on the plane also reduce the ambient noise. As a result, you'll be less bothered by the loud aircraft engine or cabin noise during your flight.