FlightSafe was developed with the express objective of protecting the ear from quick and major changes in the air pressure, such as can be experienced in airplanes or cable cars. Inserted in time before the landing or the trip down to the valley, the ear protection forms a small chamber in the auditory canal in front the ear drum. A special, high precision filter delays the increase in air pressure in this small chamber.

Even if the Eustachian tubes can perform an active opening to the middle ear for the pressure balance only with a delay or with limitations, the buffer effect in the chamber prevents the ear drum from bending painfully.