Footwear sole with midsole protrusions

A footwear sole having a perimeter defined by a toe end, a heal end, a medial side, and a lateral side, comprising:

• a midsole having a midsole top surface and an opposite midsole bottom surface, wherein the midsole bottom surface is comprised of a baseline bottom surface and a plurality of protrusions extending downwardly from the baseline bottom surface, each of the plurality of protrusions have a hemisphere-shaped distal end;
• an outsole having an outsole top surface and an outsole bottom surface, the outsole top surface is comprised of a plurality of recesses such that each of the plurality of recesses corresponds to an associated protrusion of the plurality of protrusions, wherein a first recess of the plurality of recesses is shaped to substantially receive a portion of a hemisphere-shaped distal end of a first protrusion of the plurality of protrusions, the outsole bottom surface is comprised of a plurality of outsole protrusions, wherein the plurality of outsole protrusions correspond to the plurality of recesses;
• and
• a bonding agent, wherein the bonding agent couples the midsole to the outsole proximate a portion of the perimeter and proximate a portion the hemisphere-shaped distal end of the first protrusion, the midsole and the outsole are not coupled proximate the baseline bottom surface that is remote from the perimeter.