The latest edition of the Ride is synonymous with another four-letter word: F-A-S-T. PowerGrid replaces ProGrid in the midsole for even smoother transitions with less weight, and the forefoot has been redesigned with deeper flex grooves and more ground contact iBR+ for enhanced responsiveness. Ride enthusiasts will rave about the 6th editions versatility, comfort and durability. Features a HydraMAX collar lining, ComfortLite sockliner, breathable mesh and a SRC Impact Zone.