Support and traction for your fastest and longest miles. Breathable lightweight mesh with strategically placed, stitched leather overlays on medial side for increased durability and added support. Cage and core elements for a completely protected ride. Full-length Micro G foam turns cushioned landings into explosive takeoffs. Strategically placed rubber traction covers high impact zones for greater durability with less weight. Non-marking rubber on the outsole delivers greater traction.