This is the Nike Free 3.0V2 Mens Running Shoes in Black.The Nike Free 3.0v2 Running Shoe offers the extraordinary feel and natural foot movement associated with barefoot training without sacrificing underfoot protection or multi-surface traction.Seamless,one-piece mesh upper for lightweight comfort,breathability and flexibility for a barefoot-like fit and feel.Minimalistic,no-sew overlays for support that allows the foot to move in a barefoot-like way.Molded sockliner that mimics the natural curve of the foot for a great fit, comfort and support.Soft foam inserts under the forefoot and heel for added cushioning.Phylite midsole for durability, a resilient ride and reduced overall weight.Deep Nike Free flex grooves for enhanced flexibility and stability.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 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.
