New from case maker Skech at the 2012 International CES is Trax for iPhone 4/4S ($TBD). A flip-open style case, it stands out from the crowd with the materials used to make it. Rather than traditional plastics or rubbers, the exterior is composed of recycled bicycle tires, making each case unique. The inside is lined with soft felt to help prevent scratching, and there are credit card slots inside the flap. Trax will be available January 10.