Australia-based LYWD has released the interestingly-named Leaf Metal Skins for iPhone 4 ($30 each), which appear to have been designed for users who aren't concerned about inhibiting the notoriously antenna-challenged iPhone 4's wireless reception by covering its glass back with a sheet of stainless steel. Each version features a different design, with names like Wave, Maze, Fold, and Fern. Tight cutouts allow for access to the rear-facing camera and flash, but the Skins otherwise protect the entirety of the iPhone 4's back.