This armband will not work for a 5G nano. It holds a 4G nano with a connected Nike + iPod Sport Kit Receiver. (The actual Sport Kit is sold separately.) The armband is ultra slim, lightweight and comfortable. It fully covers the nano, including the entrance, for enhanced protection during workout rigors. Other features include a hidden pocket to hold a key or money; a clear protective window cover with full navigational control; a cord management flap to control and store the earphone cord; and reflective materials for nighttime visibility. The armband is washable and adjusts to fit arms 8" - 16". For larger arm sizes, an Armband Extender is available. See model EX3 which increases the maximum arm size by about 6.5 inches. Color: Black This armband can also be used for a 2nd generation nano when connected to the Nike + iPod Sport Kit receiver.