3D Cartoon Autobots Transformers Optimus Prime Soft Silicone Case Skin Protective Cover for Samsung Galaxy S3 Siii i9300 Autobots Transformers Optimus Prime Soft Silicone Case Skin Protective Cover Material: Silicone Brand NEW, dust and shock proof, great gift for kids. Compatible: Samsung Galaxy S3 i9300 1 X Silicone Case, item will be sent by USPS with tracking number.