Abstract: A midsole for a shoe, where the midsole is 3D printed from an elastic polymeric material, the midsole comprising: a sole facing surface, a foot facing surface, a plurality of walls that in a first position are substantially perpendicular to the sole facing surface that extend from the sole facing surface to the foot facing surface where each wall has a height, where the plurality walls define a plurality of cells having a central axis that is substantially parallel to the walls and having a radius from a wall to the central axis, where the walls in a second position are configured to elastically deform upon application of an external force so that the deformation provides a change in the radius and/or the height, and where the walls are adapted to return to their first position upon removal of the external force