Tension Block for iPhone 6/6s Gray. Form-fitting and built to last, the Tension case features Flex2O(TM) TPU soft shell technology for lightweight and reliable protection. Its slim design is perfect for everyday use and fits comfortably in your hand so it feels like just another part of the phone. Adorned with an eye-catching pattern for bold style that also doubles as a grip enhancer, the Tension case delivers dynamic visuals with