The Exovault aluminum iPhone case is impractical, expensive and adds some significant bulk to the slender and svelte handset. But that doesn’t mean we don’t want it. Unfortunately, they don’t make a version for the iPhone 4, but on the upside all you iPhone 3Gs users can now feel a bit more rarefied. The Exovault is made from from solid metal stock in two pieces, is available in black or silver and features a wood accent on its back. It sells for $90, though expect to spend $5 more for the silver version.