iPhone 6 ZuCase Protective Rubber Case, Soft TPU Case - Crystal Slim Case for iPhone 6 (Crystal Clear) We can provide custom phone cases with any design for you. If you want, please contact us! Specially designed case that has a soft silicon inner skin and a hard plastic outer shell Use rechargeable lithium polymer battery. Integrated power switch allows you to switch on/off the battery case. Only use the battery when you need it. Good Quality Beautiful Case