Go to http://www.rvsupplywarehouse.com/pro...id/73/pid/1597
to see the mirrors I've been using for more than two years. Tow N See.
They are readily available. I'm not suggesting that you get them from the web site above, just have a look.
I'm perfectly happy with them. You will get some vibration at high speed, but that's gonna happen with anything that you attach to your vehicle. They suction cup to your existing mirror so you can adjust them using the adjustments for your factory mirrors.
I clean the suction cup and the RAV mirror with glass cleaner before installing them and haven't had one come off on me. There is a tether included, should the mirror let loose.
Light weight, easy to install and to store. You can get standard or convex. I went with standard because I wanted to see vehicles that may be overtaking, well before I move into the passing lane.
If you Google Tow N See there are a couple videos somebody has posted. I didn't watch them myself.