Agent 18 has unveiled two cases for the iPod nano 4G, the ClearShield and FlowerVest. The ClearShield covers the Nano in a layer of transparent plastic that snaps on and off, with interior rubber pads to absorb shock. The lens is protected, while access is still available to the connectors and hold switch. A headphone cord wrap is also included with the basic package. The ClearShield is also avail
