A little late to reply, but my GF and I have this TPU case we got off of Amazon. She got a pink case for her red Flex 2 and I got a black for my Gray Flex 2. It has a soft back touch and glossy sides for grip. If you place the phone face down, the glossy sides prevent the phone from sliding. Just search for karendeals on Amazon.
Posted via the Android Central App on my G Flex 2