I had been delaying buying a case for my new iPhone. Then I read about Miniwiz's Re-Case cover made from 100% recycled agricultural waste and post-consumer plastic on TreeHugger and was instantly sold.
The case fits snug providing reliable protection. I really like the look of the material. The light cross-hatch pattern and ridges on the sides provide an excellent grip. The only negative is it is really hard to get off once it's on.