Featuring a one-piece Flyknit upper, boasted with precision-engineering to provide support, flexibility and breathability for runners. In addition, the new runner is highlighted with its giant midsole made of a single block of foam, which helps provide more energy to users with every step. Its Nike React foam cushioning is responsive yet lightweight, durable yet soft. This attraction of opposites creates a sensation that not only enhances the feeling of moving forward, but makes running feel fun, too.