Brand new, never been worn, in original box. Comes with unused shoe bag as well! Zoom Air units and full-length ZoomX foam deliver Nike’s highest energy return cushioning system, adding more bounce into every step. A thin rubber outsole enhances traction and allows for more ZoomX under the Zoom Air cushioning. The additional foam not only adds more bounce, but also helps improve transition from heel to forefoot. Full-length ZoomX foam offers an ultralightweight and responsive ride. It’s built for speed but also provides cushioning to stay fresh even in the late miles of a marathon. It offers comfort where you need it. Full-length carbon fiber plate delivers a sort of roll-forward feel that makes you want to take on the next step. It gives you a propulsive sensation and helps you smoothly transition through your stride. Both the forefoot and heel offer slightly wider bases for a stable platform, so you can tackle turns on the course with confidence.