I have tested this mirror and am really excited by the size! However, I can not use in our car, since the mirror can ONLY be attached to the headrest. It would be better if you could attach the mirror also elsewhere, because not every car has on the rear seats, headrests. The mirror is to describe the size of the sun visor front. One sees his child completely. With the joint, you can also adjust it very well. For this you have to take a second person with this that sets him while you sit in the driving seat.
The mirror is very easy and can sometimes fall without going broke. With the help of Velcro, the mirror is the headrest around moored.
If you get a different mounting option, then I will buy after the mirror.