Men's Nike React Infinity Run Fk 3 Shoe - Black - Low-top sneakers Still Nike's most tested shoe, the React Infinity Run Flyknit 3 is soft, stable, and among our favorites because it's intended to prevent injury. By removing material from the upper of the shoe, Nike was able to add more rubber to the outsole for more grip, as well as more cushioning around the heel and ankle for even more support and to prevent foot fatigue, and therefore the chance of injury. Nike created this iteration of the Flyknit to provide a smooth ride that melts away miles on runs both short and long. Smooth, stable version of Nike's favorite Flyknit series. Nike React foam midsole offers max cushioning for injury prevention. Revised design is lightweight for ease of movement and efficiency. Flywire tech in the upper provides increased lateral support. React midsole foam offers high energy return with every stride. Rubber outsole supplies reliable traction on wet roads.