Bridge the gap between your weekend training run and race day in a durable design that can be deployed not just at the starting line of your favorite race but in the days and months after your conquest. It offers comfort, and reliability but with a propulsive sensation that'll help you feel fast and fresh. That kind of versatility is uncommon in the running arena. But who said you can't have it all? Newly implemented Nike ZoomX foam feels responsive and lightweight. The foam is shaped like a rocker, providing support for the 3 phases of a runner's stride. It offers flexibility when your foot rises off the ground, a smooth ride when your foot is moving forward and cushioning at ground contact.Nike Zoom Fly 5 men's running shoes.