to measure and monitor their progress toward their goals. To get instant workout feedback, you'll need Nike+ ready shoes and either a Nike+ SportBand or an iPod nano and Nike + iPod Sport Kit (which includes a sensor and iPod nano receiver). When placed under the sockliner of the left Nike+ ready shoe, the sensor measures your pace, distance, time elapsed and calories burned. This information is transmitted wirelessly to the receiver for real-time audio feedback while you listen to your favorite workout  (less)

responsive cushioning and support for a smooth ride.Strategically placed overlays on the upper provide a more natural range of motion and a snug, supportive fit, while a radiused lateral crash pad helps absorb shock at impact.  (less)