In efforts to make the world slightly better, Case-Mate has introduced its new rPET ultra-slim hard shell cases for the iPhone 4S and iPhone 4. The rPET cases are made from 100% recycled PET plastic bottles and have a shiny translucent finish. Case-Mate claims its rPET cases are each made up from one PET water bottle and are impact resistant. The rPET cases are available now in an array of vibrant colors for $30.