Designed to complement the Nike + iPod Sport Kit, Sportsuit Sensor+ is a finely crafted neoprene and rubber pouch that allows serious runners to attach the Nike + iPod wireless sensor to the top of your favorite pair of running shoes.In addition, the Sportsuit Sensor+ incorporates a pocket to safely store your Nike + iPod wireless receiver while not in use. The Sportsuit Sensor+ is easily attached and removed by slipping a small rubber strap underneath your shoelaces and fastening it with a strong velcro closure. Once in place, your Nike + iPod wireless sensor is protected from all the elements that serious runners encounter.