Decking out our phone with some concrete casing sounds heavy and bulky. It also sounds freaking cool. POSH-PROJECTS has done away with the bulk but kept the cool factor with their Luna iPhone 5 Skin. Now you can clad your iPhone in a slab of thin concrete that comes with unique little craters like you ripped it from the surface of the moon. Each skin is one-of-a-kind and won’t add much weight like you might expect it to. It’s also a much better option than actually dipping your cell in some freshly poured concrete mixture.