Barely used in great condition. Constructed with an ultra comfortable one piece Flyknit upper, the Nike Free Flyknit 4.0 is lightweight, flexible, and supportive. This advanced running sneaker also boasts knit-in Flywire cables that wraparound the midfoot, knit-in heel support, slim midsole, asymmetrical lacing, and hexagonal flex grooves on the outsole with secondary cuts for excellent flexibility.