Sock Cases For Mobile Phones, protect your gadgets with these versatile Sock Cases in six vibrant colours (green, purple, grey, blue, orange, and pink). Expandable and protective, these colourful socks will help protect any gadget against scratches - perfect for protecting the screen of your device from keys lurking at the bottom of your bag. The Sock Case will also ensure longer battery life as it protects the phones battery from the cold. A phone battery loses 50% of its power when the temperature goes down.