Nike free run 2 trainers redbarefoot like fit with protective edgeadding lightweight reinforcement to an established running design the nike free run 2 mens shoes are made to optimise the foots natural range of motion in a supportive fit for superior flexibility and tractionbuilt with deep flex grooves along the outsole these nike free run shoes offer a natural range of motion and flexibilitybenefits of these nike free run 2 trainerscombination mesh and textile upper reinforced with