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Soft upper with Ryn Encapsulated Air Tunnel Max for an ultimate workout ride. Provides the cushioning you want, and the stability you need. Ryn Rocker Sole Technology: As the foot strikes 1.heel, 2.mid-foot and 3.toe-off on Ryn's seven layer sandwich structure, its EVA embedded graphite shank see-saws on the Ryn AIR TUNNEL, thus recreating the stable natural foot strike environment humans were evolved to follow. As a direct result of this guided motion, Ryn footwear: reduces stress on back, hips, knees and ankles; strengthens and tones the core, gluts, thighs, calves and back muscles; aligns the body; stimulates the arch and enhances blood circulation; stabilizes and guides the foot strike and promotes energy return.
Ryn Nazca Sympatex Blue/White Walking Shoes - Unisex - B01MPXNTKX