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In certain cases (landing plane, high speed tunnels crossing), the brual variation of pressure on the eardrum can involve a very sharp pain.;Quies EarPlanes Ear Plugs Adult 1 Pair soothe auricular pain due to crutal changing of pressure in train or plane.;The pressure absorbed by a patented ceramic filter is rebalanced on both sides of the eardrum. It is thus protected from the risks of overpressure.Quies EarPlanes Ear Plugs Adult 1 Pair
