Nike reactx Infinity Run 4 Black/white Size 12 Snug fit Updated Flyknit gives you a stable, secure feel More room in the toe box adds comfort ReactX foam gives you an incredibly smooth feeling Waffle outsole provides durable traction Flyknit tongue is adjustable and plush Foam collar is soft and supportive to the touch Increased rubber at the outsole gives durability and traction EUC Offers welcome!