This pair of cheap nike shoes you are looking now is the Nike Air Free Run Shoe.It has these features:Upper's extensive use of mesh provides robust ventilation while creating a more barefoot-like fit and feel.One-piece overlay gives lightweight,targeted support that allows the foot to move in a barefoot-like way.Asymmetrical lacing system helps reduce pressure over the top ridge of the foot.Molded sockliner mimics the curvature of the foot for enhanced comfort and support.Phylite midsole for durability,a resilient ride and reduced overall weight.Wider flex grooves across the forefoot for muscle activation and a more barefoot-like experience.Durable rubber outsole with Waffle pattern for improved proprioceptive feedback and traction that encourages a more neutral,efficient stride.Nike Free Sale is technology invented by Tobie Hatfield at Nike,Inc.and developed in conjunction with Gerard Hartmann and incorporated into some of their athletic shoes.Nike Free attempts to simulate barefoot runningwhile wearing a shoe.As this shoe allows the muscles in the foot to gain strength by providing less constriction,runners are advised to gradually break into the shoe rather than immediately running long distances as to prevent muscle cramps and other discomforts.In 2006 Nike released a new version of the shoe,the Nike Free 5.0 V2,that addressed some of the durability issues in the earlier model.Among other changes,the heel and sidewalls of the shoe were redesigned to prevent tearing.