Engineered to maximize speed and minimize weight, this game-changing running shoe sits on layers of springy technology to propel you to new personal records.Perfect for: Runners looking for turbocharged speed with minimal weight to power through 10Ks, marathons and beyond while leaving old personal records in the dust.Upper: Flyknit upper flexes and rebounds naturally with every stride. Targeted ventilation zones provide essential breathability when your intensity heats up. Asymmetric lacing creates a biometric fit that eliminates the weight of an internal arch band. Wider toe box allows for natural splaying on long runs.Midsole Drop: 8mm. Classified as a mid-drop measurement, it pushes your foot forward to support a more natural mid/forefoot strike.Lower: Embedded flyplate combines supportive landings with springy, forward motion. ZoomX foam transitions from heel strikes to toe-offs with lightweight, propulsive energy. Bulging under the heel promotes a stable ride. Ultrathin rubber tread provides multisurface traction with minimal added weight. Racing: puts streamlined comfort and performance under every stride to eliminate distraction and promote speed at any distance Ultralightweight: provides high-performance cushioning with extremely minimal weight Energy return: transforms every heel strike into responsive, explosive forward movement Stability: helps maintain comfortable foot alignment with targeted cushioning and support Lace-up style Flyknit upper provides a snug, socklike fit that flexes with every movement Removable, cushioned insole allows for custom orthotics Carbon-fiber flyplate provides sturdy grounding with a propulsive feel ZoomX foam sole delivers unparalleled responsiveness for record-breaking speed Textile and synthetic upper and lining/synthetic and rubber sole Imported