The RW Takeaway: The Free RN 5.0 has an extremely flexible sole that lets you move freely, but forces your feet and leg muscles to work more than traditional footwear. Grooves in the sole don’t trap ...

Why It’s Hot: It’s the next best thing to running barefoot without building two-inch calluses or having to explain those toe shoes. More flexibility and movement A sock-like upper that’s easy to get ...

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