The perfect solution for how I wanted my phone mounted to my bicycle. I really like how easy it is to find and use an attachment for anything. I have a mount on my mountain bike, car, road bike, and an armband. Even after a rough spill on the mountain bike, the phone will still not fall off of its mount. Highly, highly recomened!
The armband stays in place on our long runs. The phone feels secure. The awesomest part is the quick release attachment. Snaps on and off for easy mid-run app/music fussing. I used to fumble with the armband sleeves or carry my phone. No more! Paired with wireless headphones... we could never go back.
I was worried that this wouldn't work well but it does. It's great that you can take it off and put it on another vehicle. It's easy to use with the quick release. As a plus once you put the ring on the back of your case you can use it with all the their quick mount products.