Nike free run 2 trainers lt greythe nike free run 2 barefoot like fit with protective edgeenjoy a supportive fit for superior flexibility and traction with these nike free run 2 trainersadding lightweight reinforcement to an established running design the nike free run 2 mens running trainers are made to optimize the foots natural range of motionbenefits of these nike free run 2 trainerscombination mesh and textile upper reinforced with lightweight strong synthetic strips for durab