The Nike Free 5.0 Flash Black/Cool Grey/Pure Platinum/Reflect Silver of Men's Nike Running Shoe offers excellent lightweight cushioning and support while enabling a more natural running experience. A reflective, water-repellent upper keeps you visible, dry and comfortable in dark, dreary conditions.Natural Stride / NATURAL RIDE, AMPLE REFLECTIVITY.Hexagonal flex grooves offer six points of flexibility to let your feet move naturally in every direction. Low-profile cushioning and a rounded heel encourage a more natural footstrike.Water-Repellent SupportThe three-layer, abrasion-resistant mesh upper repels water while keeping your feet cool. Flywire cables integrated with the laces deliver added support and an adaptive fit.Enhanced VisibilityInspired by the natural beauty of the Northern Lights, the multicolor reflective upper enhances your visibility in low light.More DetailsFull inner sleeve for breathable, seamless comfortNo-sew overlays provide support and durability without added weightSolid rubber under the toe enhances traction and durabilityWaffle outsole pistons absorb impact and add responsivenessMidsole offset: 8mmNIKE FREE ORIGINSAfter 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 running shoe from the inside out....The Nike Shoes more colors

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