Higher foam heights provide an even softer feel. A wide, exaggerated shape at the forefoot offers a more stable ride. Nike ZoomX foam is responsive and lightweight, giving you bounce with every step. Shaped like a rocker, the foam provides support for the 3 phases of a runner's stride. It offers flexibility when your foot rises off the ground, a smooth ride when your foot is moving forward and cushioning at ground contact. An evolved Flyknit upper places zones of breathability where your foot heats up most. It's strong and durable, keeping your foot secure with every mile. A panel at the heel is embedded in the Flyknit—providing extra support. The Waffle outsole was created using runner-informed data for traction where you need it. This info also helped guide the design and look of the shoe's sidewalls.