The RADIUS consists of the corner modules and the X frame that holds them together. The corner modules are beveled (or chamfered as Jonathan Ive called it) much like the bezel of the iPhone 5, while raised profiles at the front of the corner modules elevate the touch screen, allowing the phone to be placed facedown on flat surfaces.
The ultra thin profile of the corner modules precisely and securely grips the thin bezel of the iPhone 5 without covering any part of the touch screen. This design allows protective film to be used on the touch screen.
The corner modules have reportedly been designed to avoid the antenna strips so as to not impede reception. The X frame connects the corners and is secured using 4 custom screws.
RADIUS will be available in polished aluminum, anodized red, anodized cyan, and a limited edition Kickstarter green.
The project has raised $15,386 of its $25,000 goal with 10 days left to go. A pledge of $49 can get you one of the first ones.