nike.jpgDafne Schippers in the Nike Free RN Flyknit

Building upon over a decade of Nike Free innovation, Nike unveils new additions to its Free footwear family. Each features a progressive geometric auxetic midsole designed to enable an athlete’s natural motion and develop strength, whether they are running or training.

  Nike Free auxetic midsole technology for Running and Training

Mo Farah in Nike Free Transform Flyknit

Allyson Felix in Nike Free Transform Flyknit

Ashton Eaton in the men’s Nike Free Train Force Flyknit

Drawing upon new studies that reveal how the foot expands and contracts upon impact with and liftoff from the ground, the splaying, auxetic midsole mimics how the body and foot react to force. It absorbs shock while accounting for the dual-plane expansion in foot size — approximately one size in length and two sizes in width — that occurs throughout an athlete’s foot strike.

Moreover, the multi-directional outsole flexibility closely mimics this changing shape, whether an athlete is moving linearly in running or multi-directionally in training. The resulting flexibility puts the foot, rather than the shoe, in control. Or, as explained by three-time gold medal sprinter Allyson Felix, “Using Nike Free footwear in my training is all about strengthening my feet. I really like having that natural movement in my shoes.  Everyone’s feet are different, so it’s great to have a shoe that really moves with you.”


Every runner possesses a one-of-a-kind stride, defined by his or her respective gate and physique.


The ways an athlete trains are as varied as the reasons why. They run, jump, cut and lift, requiring varying degrees of support and flexibility.

 Allyson Felix in Nike Free Transform Flyknit

The Nike Free RN Flyknit and Nike Free RN are available from April 7th in men’s, women’s and young athlete sizing at The men’s Nike Free Train Force Flyknit and women’s Nike Free Transform Flyknit are available from April 7th at All styles are available to be customized with NIKEiD.

Shop our full Nike Free range here.

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