Nike's supercharged ReactX foam amps up the energy return under a new-generation running shoe that still delivers the plush, smooth ride of earlier iterations. Tuned support and targeted cushioning efficiently transition every stride from heel strike to toe-off, with an internal Flyknit sleeve and water-repellent toe keeping your foot dry and comfortably in place as you move. Cushioning: absorbs impact and distributes weight for consistent, buoyant comfort under each step Energy return: transforms every heel strike into responsive, explosive forward movement Support: enhances the fit with targeted contouring and cushioning in the footbed Lace-up style Flyknit upper provides a snug, socklike fit that flexes with every movement Water-repellent toe liner Removable, cushioned insole allows for custom orthotics Nike ReactX foam provides 13% more energy return than Nike React foam and leaves a smaller carbon footprint under every step Textile and synthetic upper and lining/rubber and synthetic sole Imported