The trainers trace their history back to 2002, when the first production samples of the Nike Free 5.0 were manufactured. Nike says it put the shoe through its paces in the research lab and found that, compared with a control group, runners using the new design showed an increase in strength and muscle growth in the foot and ankle; greater flexibility in the toes, feet and ankles; and improved overall balance.
The Nike Free Flyknit Shoe is comfortable for running.Nike Free Focus Flyknit Training Shoe helps keep your foot flexing naturally throughout your workout.A Flyknit upper delivers lightweight breathability to help keep you cool. The one-piece Flyknit upper hugs your foot with a sock-like fit for incredible lightweight support.Breathable areas are seamlessly integrated in the Flyknit to provide cool comfort during your workout.The one-piece Flyknit upper hugs your foot with a sock-like fit for incredible lightweight support.


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