Got $2,000 burning a hole in your pocket? If so, that's just how much an iPhone 6 case called The Slit is going to cost you and your exquisite taste for all things premium. Squair is a Japanese case manufacturer that creates high-end, fashionable cases for Apple's line of iPhones from a material called Extra Super Duralumin A7075. This is supposedly a special formulation of an aluminum alloy that is both super strong and lightweight.