The 2015 Nike Free Collection continues to evolve the running shoe. Focusing on the natural movement of runners, the Nike Free 3.0 Flyknit, Nike Free 4.0 Flyknit and Nike Free 5.0 are more flexible than ever. Through these particular styles, athletes will be able to find the right fit for them in order to optimize their performance.
Embracing the sentiment that less is more, the 2015 Nike Free Collection eliminates layers, seams and bulk to ensure the shoes mimic barefoot training as much as possible. Nike writes, "The final product is all about the power of the foot — not the shoe." With flexing soles, sock-like uppers, form-fitting heel support and an overall featherweight design, the Nike Free Collection achieves 360-degree natural motion.