EDGE Design has launched a second set of both the Aktiv and Alfa line of cases for the iPhone 4S and 4. Inspired by the Italian car design company Pininfarina, the cases are constructed from aluminum and feature an interchangeable color band. Both cases sell online for $99 plus shipping and handling, and include a free water resistant pouch for added protection. In addition to the iPhone models, EDGE Design has also announced that it plans to release a version of the Alfa case designed specifically for the iPad later this year.