... 2. can do any design on the TPU Specification: material Flex gel TPU material color pink,mican,milk ,blue,black,green,pastel voilet ... ,blue,black,green,pastel voilet 4.Special TPU(Thermoplastic polyurethane) material which can be twisted without cracking.5.Newest model for ... ,weight less than 20g(0.7 ounce).2.Soft TPU material and glossy face so that will not stick to you ...