Blox Plane earplugs reduce and regulate air pressure during altitude variations: the small hole at the entry of the plug allows only a small amount of air to enter, and the second small hole, at the tip of the plug, slows the flow of air entering and leaving the ear. The difference in pressure between the interior and exterior of the ear is reduced, which also reduces the pain. This model can also serve as a noise filter and reduce painful sounds to an acceptable level.
Kids size from the age of 2