Generally, we use a silicone case for the protection of iPhone. If you need a more eco-friendly iPhone case, the SGP Special Edition Gariz iPhone case might be suitable for.
The special edition iPhone case is made of wood black, and designed for iPhone 3G/3GS. It comes with one front protection film and a Logo protection film mounted in the middle of the wooden case. The clear and unique pattern is placed on the back of the case.
The SGP Special Edition Gariz iPhone case is priced at $26.99 USD. If you prefer the hard or special iPhone case, can grab one from SGPstore.