Abstract: A device for facilitating the equalization of pressure across the eardrum of a user, comprising (a) an ear piece being sized and dimensioned for tightly fitting the outer ear canal of the user, such that when the user being underwater, water being prevented from entering between the ear piece and the outer ear canal, the ear piece being formed with a channel having an inner opening and an outer opening, the inner opening facing the eardrum of the user and the outer opening facing the outside, the channel and the outer ear defining a permanent void; and (b) an inflatable bag being in fluid communication with the ear piece via the outer opening, the bag defining a changeable void.