A shoe comprises a sole, an upper, and a welt. Embodiments of methods of micro-fabricating such SWSs are also disclosed. A second IC is electrically connected to the second face of the substrate, such that the second IC is connected to the first and second folded segments of the substrate abode the first IC. The dimensions of the transition between at least the tube bottom that is impinged upon by the hot medium entering the tube bundle on the feeding side are selected in such a way in the direction of the housing jacket that a drop in temperature that is sufficiently great regarding the thermal resistance of the plastic is definitely obtained all the way to the contact area on the housing jacket. In some cases, the deforming zone extends around the periphery of the chassis.