Bioserie Bioplastic Case for iPhone 3G/3GS - Lime Green Bioserie iPhone Cover consists of a unique blend of biodegradable components (100%), all derived from plants and annually renewable natural resources Product contains Ingeo biopolymer, under license from NatureWorks LLC, our key partner in product material development. The biopolymer is made in the USA, and derived from plant sugars. Unique ridges on the front protect iPhone?s glass screen during facedown placement Fine texture pattern on the back improves grip. Sleek and Slim, provides protection without bulk