The Air Zoom Alphafly Next% 2 is designed for race day and beyond, helping you shave precious time off your personal bests. Experience the best energy return of any Nike running shoe with this new version of the Alphafly. Lateral Zoom Air pods in the forefoot deliver Nike's highest energy-returning cushioning system, adding more bounce to every step. The outsole along the forefoot has less rubber but improved traction and more ZoomX, a much more responsive material just under the ball of your foot as you strike the ground and take off into your next stride. Your feet rest on full-length ZoomX foam for an ultra-light and responsive ride. It's built for speed but also offers unmatched cushioning to keep you fresh even in the final miles of a marathon. It provides protection and comfort where you need it. The full-length carbon fiber flyplate provides a kind of forward rolling sensation that makes you want to take the next step. It gives you a propulsive feel and helps you transition smoothly throughout your stride. The forefoot and heel offer slightly wider bases for a stable platform so you can tackle turns on the course with confidence.