Wow, sorry everyone; I didn't realize the hotlink would be a problem, I just wanted to showcase what I thought was an interesting idea. I've removed the hotlink to the image, but it showed up just fine the whole time on my browser.

Anywho, like many gear items that fit in a pocket or on your neck this mirror wouldn't be my first choice if I had to choose just one, but if it works decently and is always on my person then I think it would be OK. I put one of the Adventure Medical Kits signal mirrors in my wallet and it was way too thick.