Get after those long runs with the Nike ZoomX Invincible Run Flyknit. A lightweight and responsive foam delivers a super-soft feel and helps deliver energy with every step. Breathable and secure, it’s one of our most tested shoes. 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 forwards and cushioning at ground contact.