NIKE Free 5.0+ Womens Running Shoes 580591-446

Nike Free Origins After learning that Stanford athletes had been training barefoot on the university's golf course, three of Nike's most innovative and creative employees set out to develop a shoe that felt natural and weightless, similar to bare feet. In 2002, they examined a group of men and women with pressure measuring insoles taped to their feet, using high-speed cameras to capture images of each foot in motion. The team spent eight years studying the biomechanics of shoeless running. The results yielded a profound understanding of the foot's natural landing angle, pressure and toe position, allowing Nike designers to build an unconventional and flexible running shoe from the inside out. More Benefits Textured mesh full inner sleeve for a dynamic, sock-like fit and easy on and off No-sew and synthetic overlays for lightweight durability and support Asymmetrical lacing system for reduced pressure on the top ridge of the foot Diagonal cuts through the arch to encourage natural motion and help increase foot strength Minimalistic, molded sockliner mimics the foot's curvature for a great fit, enhanced comfort and added support Abrasion-resistant rubber under high-wear areas for enhanced durability Waffle outsole pistons for impact absorption and added responsiveness