powerskin’s smooth silicone cases with built-in batteries provide up to twice the power for popular apple, android, windows and rim smartphones, featuring sleek, protective designs that fit your phone and fit your style. powerskin® is powered by xpal™, meaning it’s charged by patented battery technology that reflects the highest standards for safety, quality and performance. designed to be your go-to, go-anywhere, go on-and-on power source, powerskin has got you – and your phone – covered.