Wow this looks really cool but I dont have the best grasp on what all it can do. Essentially you need an ipod nano, nike+shoes, and nike+ipod sport kit. Essentiall it keeps track of your workout and you can sync the data back to your computer to keep track of you running workouts. Basically Nike will be releasing new shoes and apparel on this line and Im guessing it will do well as everything else associated with the old iPod has especially since it has Nike's flair.