Heel is built with a clip for containment and cushioning Nike ZoomX foam is responsive and lightweight Higher foam heights provide an even softer feel Wide, exaggerated shape at the forefoot offers a more stable ride Keep pushing your runs to the limit. The Nike ZoomX Invincible Run Flyknit 2 keeps you going with the same super-soft feel that lets you feel the potential when your foot hits the pavement. It's one of our most proven shoes, and it's still designed to keep you on the road and off the bench. Safe, cushioned and comfortable The three Flyknit components were placed in different areas of the shoe. On the tongue, a no-sew construction creates soft padding and an adaptable fit. The upper is soft and has an extremely secure fit. Finally, the heel has a clip to offer support and cushioning. The result is an upper that keeps your feet comfortable and stable as you run across the pavement. Taller, softer and wider Taller foam provides a softer feel. The wider, exaggerated shape in the forefoot offers a more stable ride. More bounce with every step Nike ZoomX Foam is lightweight and provides an immediate response that allows you to bounce with each step. Its rocker-shaped design offers support during the three phases of the runner's stride. It gives you flexibility when you lift your foot off the ground, a smooth glide when your foot moves forward, and cushioning on the ground. Data-Driven Traction The waffle outsole was created using feedback from runners to provide traction where it's needed most. This information also helped guide the design and look of the sides of the shoe.