This armband fits the 4G nano and a connected Nike + iPod Sport Kit Receiver. The armband is ultra slim, lightweight and comfortable. It fully covers the nano, including the entrance, for enhanced protection during workout rigors. Features providing unmatched comfort, convenience and protection 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 ...