GizMac's previously announced combination aluminum-polycarbonate case for the 3G iPod nano, the Aluminate, is now shipping.

First unveiled in January, the Aluminate case protects the entire Nano, including the screen and click wheel.

The case can be secured by using either the included lanyard or carabiner. The Aluminate for 3G Nanos comes in five different colors: black, silver, blue, pink and green. It is available for $30, and includes two colors in the same pack.