Nike introduces the Free Gym for women, a sneaker designed for yoga and other mind-body fitness activities that enhances a barefoot workout. Weighing in at just 5 oz., the ultra-light Free Gym has deep multi-directional flex grooves for a full range of natural motion, as well as a rubber outsole with herringbone pattern for superior traction. The split-toe design allows for natural grip and improved balance, while the arch strap enables a nicely secure fit. The Free Gym is meant to be worn without socks, so it's lined with natural fibers derived from volcanic rock to absorb sweat, and memory foam heel pads and arch support provides comfortable cushioning. It's in stock now at NikeStore.com.