PREVENTS PAIN | Changes in altitude can create troublesome pressure on your ears. Alpine FlyFit filters are designed to regulate this pressure like a valve, so your ears can adapt! No more pain when taking off or landing in an airplane. A must-have for everybody who experiences pain while flying. REUSABLE EARPLUGS | The FlyFit earplugs are built to last and a single pair can be used up to a 100 times! COMFORTABLE DURING FLIGHTS | FlyFit airplane earplugs are made of reusable hypoallergenic material designed to adapt to your ear canal. Light and easy to remove. Great to sleep with a neck pillow during your flight and an essential travel accessory.