The road is your take-off track. Get ready to take the flight with the winged horse on your feet. Extra elasticity is perfect when you go down the street. When you run every day or for your longer runs, you will feel the spring in step with the same cushioned support as the previous model. The breathable mesh upper combines the comfort and durability you want with a wider fit on the toe. A spring at your feet Nike React foam is lightweight, responsive and durable. More foam means more cushioning, without bulk. The Zoom Air unit offers more elasticity at every step. It is closer to the foot for greater responsiveness.