The Shoe Pouch™ was designed to allow runners and walkers to use the Nike+iPod Sport Kit®, NOTE: the Nike+iPod Sport Kit® is sold separately). Included in this Sport Kit is a sensor that fits inside the sole of specially designed Nike® shoes (called Nike+®) . But what about people who currently wear other brands of athletic shoes, including Asics®, New Balance®, Reebok®, Saucony®, or even other Nike® brands? The shoe pouch lets you attach the sensor to the top of any running shoe!