Nike InfinityRN 4

With supportive cushioning designed for a smooth ride, the Nike InfinityRN 4 is a brand new take on a familiar favourite. It features our brand new, springy Nike ReactX foam, which gives you 13% more energy return compared to Nike React foam to keep you fresh. (What else? Nike ReactX reduces the midsole's carbon footprint by at least 43% compared to Nike React foams. So it's also better for the planet). We've combined ReactX foam with Nike Running's best-fitting Flyknit yet, so you can take off anytime, anywhere with secure support in the upper while enjoying high breathability. It's a shoe that gives you the priceless feeling of being able to run faster and further thanks to an intuitive design that supports every step. What's new in the Nike InfinityRN 4? This version of the Nike InfinityRN 4 still offers a soft and smooth ride, with new ReactX foam giving you more support. The revised Flyknit upper and wider toe box keep your foot feeling stable and secure.