Quies Protection Auditive Avion Filtre Anti-Pression protects the eardrums from the risks of overpressure when traveling by plane.These hearing protectors are made of flexible silicone, with a cylindrical hollow in the center in which a ceramic filter is inserted. This porous filter allows a gradual exchange of air over several minutes, allowing the eardrum to gradually adapt to the new pressure, without suffering any shock. Made of silicone, a soft and flexible material, they are easy to insert and adapt to the shape of the ear canal. Box of one pair of reusable ear protectors.