A mid-sole is provided for footwear in order to reduce shock more effectively while providing stability. The mid-sole includes a cap, a plurality of connection elements and supporting elements, an elastic pad, and a cover. The mid-sole is fabricated in such a way so that it can function as the structure of beams and column, such that the ground reaction force will be transferred to the columns at the time of impact, instead of at the area directly under the foot as in most of the conventional shoes. The connection elements help to transfer force at the first impact of the shoe with the ground, and guide the direction of force along the force line of the shoe. The elastic pad makes the deflection smoother, thus making the shoe more stable, and the feeling of the foot more comfortable, during running.