the back of the hand... who knew. Apparently snowmobile drivers do. Google: snowmobile hand mirror. Cipa makes one, so does Raider. Under $10. You can pay much more and get one from Polaris. Why don't we talk about this. All I ever hear about are handlebar mirrors or helmet/eye-glass mirrors. A back of the hand mounting and the large size of mirror it allows for, plus the ability to instantly rotate the mirror to show you exactly what you want to look at... I'm in. Ordering a couple right now. Give you a report in a couple of weeks.