Itskins' Fusion Carbon Core for iPhone 5 ($32) combines rubber, plastic, and a sheet that looks like carbon fiber into a somewhat odd-looking, but not unattractive case. As with many cases we've seen, it uses plastic for structure, then rubber for shock absorbency and flexibility. The corners are extended to provide even more protection. Embedded in the back is the carbon fiber layer, interrupted by the strangely-shaped camera hole. Fusion Carbon…
