I have a work bench full of mirrors. I tried so many before I found what worked for me. I found the handlebar mirors not always easy to view as I would shift my handlebar position while riding. Most of the helmet mounted mirrors were either difficult to focus on or too distracting. So for a long time I just gave up and relied on hearing the cars/trucks. I always ride assuming a vehicle is approaching me from behind.

I read a post on the forum that simply said would you drive a car without rearview mirrors? This got me re-energized to find a miror.

My search ended when a friend recommended the following mirror,

I use it attached to my helmet and have been really pleased. It is out of the way but with a glance (not requiring me to move my head) I can get a read of what is approaching from behind. I am really happy I stuck with the search for a mirror, it has been well worth it. I do not have the packaging so I do not remember the name of the miror, but someone on the thread will know the name.

Good Luck