The Nike React Infinity Run Flyknit 2 ‘Black’ represents one of the debut colorways of the updated performance runner, featuring a Flyknit upper that offers more support around the toe, eyestay and foxing. Improved breathability is added to the vamp and midfoot, the latter secured with Nike Flywire cables integrated into the lacing system. Lightweight and responsive cushioning arrives via a Nike React midsole, its rocker shape designed to promote a smooth transition through the runner’s stride.