Lightweight sole for article of footwear

A sole for an article of footwear, comprising:

• a midsole having a medial side, a lateral side, and a plurality of polygonal-shaped openings extending therethrough;
• a medial plate disposed along at least a portion of the medial side of the midsole, wherein the medial plate includes at least one polygonal-shaped extension adapted to fit within at least a portion of at least one of the polygonal-shaped openings in the medial side of the midsole;
• and
• a lateral plate disposed along at least a portion of the lateral side of the midsole, wherein the lateral plate includes at least one polygonal-shaped extension adapted to fit within at least a portion of at least one of the polygonal-shaped openings in the lateral side of the midsole.

A sole for an article of footwear, comprising:

• a midsole having a plurality of polygonal-shaped cavities formed therein;
• a polyurethane film disposed on a bottom surface of the midsole to thereby form a plurality of fluid filled compartments in the midsole;
• and
• an outsole disposed below the polyurethane film, wherein the outsole includes a plurality of polygonal-shaped openings extending therethrough and aligned with respective ones of the plurality of polygonal-shaped cavities formed in the midsole.