Whatever your running level, the Nike React Infinity Run Flyknit 4 is the ideal neutral all-round shoe. Whether you're heading out for a 5km or a slightly longer endurance run; the React Infinity Run Flyknit can do it all. The shoe is suitable for both novice and experienced runners. Experience a new level of running with this all-round running shoe! Midsole The shoe has a React foam midsole made of ethylene vinyl acetate (EVA) and thermoplastic elastomer (TPE). This unique combination of polymers ensures that Nike React foam is very responsive and cushioning. This foam is specially designed to reduce the risk of injuries while running. This makes the React foam one of the most complete foam types currently available. Upper The upper of the shoe is made of Flyknit. This is made from strong, but lightweight yarns woven into one piece. The midfoot is reinforced with a denser weave, while the forefoot is flexible and breathable. Instead of laces, the shoe features Flywire technology, made from high-tensile wires used in suspension bridges and providing ultimate precision support. Outsole Thanks to the rubber outsole, the shoe offers good grip and traction while running. The Nike React Infinity Run Flyknit 4 will help you achieve your goals!