Mirrored Sunglasses

Wondering if anybody has a pair with the mirror part on the inside so you can see behind you. They sound totally geeky to me, and probably are, but it would be nice to be able to see traffic behind me without having to turn my head, as that tends to make me deviate from my line, if only ever so slightly. I’d rather not put one of those mirrors on my helmet that sticks out three feet to the side.

I’m not 100 percent sure it’s ANSI certified, and it sure ain’t cool, but it’s better than a side mirror.

http://www.dc-segways.com/accessories.html