Armband for iPod nano 4th generation when used with a connected Nike Sport Kit Receiver AND Sensor Case to hold Nike + iPod Sport Kit Sensor (does not include sensor)
This thing is so great. The strap for the sensor to your shoe is nice and tight so it gives great accurate distances. The armband took me a while to get used to, but I run my headphone down the back of my shirt and out the sleeve and that keep s the cord from flopping around and it works great.