The Nike Womens ZoomX Invincible Run Flyknit in PhantomBlackFootball GreyVolt combines Nikes lightest, and most responsive foam, with an evolved, breathable, and stable upper to give you one of their most tested shoes. The Nike Womens ZoomX Invincible Run Flyknit in WhiteWhiteBlack combines Nikes lightest, and most responsive foam, with an evolved, breathable, and stable upper to give you one of their most tested shoes. 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 runner39s 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. It39s strong and durable, keeping your foot secure with every mile. A waffle outsole was created using runnerinformed data for traction where you need it. This info also helped guide the design and look of the shoe39s sidewalls. A panel at the heel is embedded in the Flyknit, providing support and stability. The collar is cushioned for a soft, comfortable feel.