The aluminum case that started it all, the Vapor by Element Case for the iPhone 4 has been a huge success with many new companies emerging to create their unique or in other cases not so unique, version of an aluminum case for the iPhone 4. Element Case has just released a new Vapor case called the Vapor Pro. It's now available in a Limited Edition, sand blasted tactical color. The new and improved Vapor Pro remains mostly constructed out of aluminum with a few improvements made to reduce, if not eliminate any signal interference caused by incasing the iPhone 4's antenna band with solid aluminum. The Vapor name bears a hefty price tag and the Vapor Pro Limited Edition case will run you $149.99.