Nike RENEW RUN 4 When you run regularly, you need a shoe that will keep you comfortable over long distances and for long periods of time. Nike RENEW RUN 4 shoes have improved cushioning and response, so you'll be back on the track tomorrow logging more miles. The Renew foam is softer than previous versions and provides good cushioning. More foam is added for a smoother transition back to the toe and for an even more flexible stride. Nike RENEW RUN 4