Abstract: A sole for an article of footwear including a first part having a bottom surface with a plurality of first protrusions increasing in thickness from a medial side to a lateral side, where each adjacent pair of the first protrusions define a first recess therebetween, and a second part having a top surface with a plurality of second protrusions increasing in thickness from a lateral side to a medial side, where each adjacent pair of the second protrusions define a second recess therebetween. When the first part and the second part are attached together, the plurality of first protrusions and recesses on the bottom surface of the first part matingly engage corresponding ones of the plurality of second protrusions and recesses on the top surface of the second part to form a midsole that deflects and absorbs impact forces resulting from multiple running conditions.