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NIKE FREE series of barefoot running shoes is one of the two most popular Nike running shoes Nike fans favorite. Series General forefoot Waffle waffle with external shading road design, with a lot of friction protruding block, has extremely suitable for running the grip, and disperse impact, make running more comfortable. BRS1000 carbon fiber heel with rubber, more wear-resistant, good grip, but it will leave a black mark on the ground when the intense friction. If you press the flexibility of Nike running shoes ratings, 0.0 to barefoot running, 10.0 as ordinary running shoes. Nike running shoes introduced a FREE 3.0, FREE 5.0, FREE 7.0, FREE EVERYDAY, FREE RUN + etc. FREE styles.
NIKE FREE series is the world's leading sports goods manufacturer Nike Group, a specific series. By product type, should be classified in Nike's footwear production lines running shoes series models. Its motion technology areas in terms of movement, NIKE FREE series of movements based on "barefoot running" concept-based play nike free running technique. According to its analog "natural feet" degree of freedom to run into delicate nike free 3.0, nike free 5.0 nike free 7.0, and other styles.

"Barefoot factor"
NIKE FREE series 3.0,5.0,7.0 and other digital numbering is not the shoes, but a factor, the scientific name is called "barefoot factor." The smaller the closer the coefficient barefoot, the greater the coefficient closer to running shoes.
NIKE FREE series of Nike sports shoes are put on the market in 2005, when, FREE running shoes simulate the main features is to let your feet when barefoot feeling, you can let your feet activities, bending and seize the ground, like barefoot running the same. So FREE soft shoes fit anyone. Nike Free shoes are designed from the start of the shoe last. Traditional shoe last is a flat model with pointed. Nike Free shoes shoe last used closer to barefoot form. Wrapping the shoe last and the methods and materials used are such that the whole design closer barefoot feeling. Flexible soles and uppers that support must achieve harmony with nature, the degree of flexibility must be consistent with the sole of the upper level of support. Otherwise the simulation is running barefoot greatly reduced.

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