 Consisting of a stack of tiny, nested boxes, inro were most commonly used to carry identity seals and medicine.The stack of boxes is held together by a cord that is laced through cord runners down one side, under the bottom, and up the opposite side.The ends of the cord are secured to a netsuke, a kind of toggle that is passed between the sash and pants and then hooked over the top of the sash to suspend the inro.