The Nike Free Hypervenom 2 F.C. Anthracite/Cool Grey/White/Black of Men's Nike Free Shoe is made with flex grooves to help your foot move naturally. Its lightweight combination upper gives you incredible comfort and durable support.MOVE NATURALLYBenefitsIconic hexagonal mesh upper is durable, light and breathableNikeSkin technology, Flywire and bootie design create a custom fitFree 3.0 outsole gives you natural feeling flexibility and supportPhylite midsole offers a resilient ride and is tough enough to double as an outsoleRubber outsole pods enhance durability in high-wear areasProduct DetailsAsymmetrical lacing is borrowed from Nike Hypervenom soccer cleats and reduces pressure on the top of the footMinimal, molded sockliner mimics the curvature of the foot for a great fit and supportNike Free OriginsAfter learning that Stanford athletes had been training barefoot on the university’s golf course, three of Nike’s most innovative and creative employees set out to develop a shoe that felt natural and weightless, similar to bare feet. In 2002, they examined a group of men and women with pressure-measuring insoles taped to their feet, using high-speed cameras to capture images of each foot in motion. The team spent eight years studying the biomechanics of shoeless running. The results yielded a profound understanding of the foot’s natural landing angle, pressure and toe position, allowing Nike designers to build an unconventional and flexible running shoe from the inside out....The Nike Shoes more colors