QUIES Air Travel Flight Ear Plugs 1 Pair are essential for individuals who experience ear pain during flights, train rides, or high-altitude treks due to the pressure changes. These earplugs feature a ceramic filter that allows for regulated air flow during take-off, landing, or when passing through a tunnel. This helps the eardrum gradually adjust to the pressure differences without causing any discomfort or damage. Additionally, these reusable earplugs come with a convenient storage box to keep them dry and portable. Experience a pain-free journey with QUIES Air Travel Flight Ear Plugs.