Review Quote: The Vader is an aluminum bumper style case that covers the sides of the iPhone 4. HornetTek designed it to work with both the AT&T and Verizon iPhone 4 models. It is composed of machined aircraft grade aluminum creating an industrial style that meshes with the Apple iPhone 4 design. To keep the iPhone 4 better protected the Vader is lined with a shock absorbing material to keep the phone safer from falls.