... Protective case is made of low-carbon eco-friendly materials:ABS and PC and TPU manganese steel. Protection case for iPhone4/4s with standThe Protection case ... 7:3 ratio, TPU manganese steel bracket.Suitable Model: iPhone4/4sProduction Process: injection molding, spray coating, die-casting, epoxy ... , odorless, harmless, never fade, no mildew, and durable. Protective cases for iPhone4/4s with stand