The present disclosure relates to an earpiece for an ear. The ear comprises a concha cavity at least partially delimited by a concha floor, a concha side wall and a concha ceiling. The earpiece comprises a peripheral skirt comprising a positioning skirt portion which in turn comprises an outer skirt surface and an inner skirt surface, wherein a transition from the outer skirt surface to the inner skirt surface occurs at a skirt edge. The skirt edge extends at least partially circumferentially around a central axis of the earpiece, wherein the earpiece is adapted to be moved to a use position, at least partially within the concha cavity, in a direction parallel to the central axis, during insertion of the earpiece into the ear. When the peripheral skirt is in a non-influenced condition, at least a portion of the inner skirt surface faces the central axis.