Low-Profile Design protects ears from pain and popping during a flight Smaller size for smaller ears Prevents ear pain and popping during air travel Free EarPlanes+ app monitors cabin air pressure in real-time New design, optimized for use with over-the-ear headphones and sleeping Clear color for discrete wearing EarPlanes prevent inflight ear pain caused by air pressure changes during air travel. Now, a free download of the EarPlanes+ smartphone app is also included! The EarPlanes+ app monitors real-time cabin pressure on your flight and sends notifications when EarPlanes are needed for ear protection. Use EarPlanes with the app for highly precise protection (the app will catch mid-flight pressure shifts), or just wear them during take-off and landing when air pressure is changing the most. New and improved Low-profile design with clear silicone make the plugs less noticeable. Also allows for over ear headphone use during a flight while sill protecting your eardrums form pressure changes.