Quad Lock® is the only mounting system that lets you integrate your smartphone in an active lifestyle. By allowing you to securely attach your phone to your bike while cycling, to your arm when running, and in your car while driving, Quad Lock® makes it much easier and safer to interact with the many sports, fitness and navigation Apps available in the App Store/Google Play.
The innovative Twist, Lock and Go™ system allows you to mount your smartphone in an instant and the Dual Stage Lock (Patent Pending) gives you the confidence that your device is always securely attached without the need for cumbersome lanyards, or straps. The unique approach of integrating the mounting interface into a slim and durable everyday case allows the Quad Lock® mounts to be much smaller than any other mount on the market. Quad Lock® is the Lightest, Strongest and most Secure Smartphone mount on the market. Once you try it you will wonder how you ever got by without it!
site link: http://www.quadlockcase.com/