There are literally thousands of different protective phone cases, car mounts, mike mounts and arm-bands for today's smartphones. But there are relatively few systems that let you use the same case across different scenarios. Instead of having to extract your phone from its case when you use an arm-band or want to clip your phone to your bike, why can't you simply clip the case to whatever mount you need? That's what Australian-designed Quad Lock does. It's system that lets you use one case with several different mounts.