About the MeanHoo Bike Mirror.
Feature : This unique cyclist's mirror has 3 pivot points for total adjustment. Fully adjustable lightweight rear view mirror, can be fitted to any eye glasses. This eyeglass mounted mirror allows you to remain aware of anything coming up behind you while you focus on the road ahead .
Adjusts to fit on right or left side. Frameless mirror provides wide, uninterrupted field of vision. Adjusts to fit on right or left side. Frameless mirror provides wide, Designed for easy mounting, removal, and adjustment, the mirror will not vibrate as you ride and will not damage your glasses.
Regardless of what type of mirror you use, unless you're dodging an obstacle to prevent a crash and you don't have time, you should still look over your shoulder before you change lanes or change your position in your lane. Drivers don't know that you have a mirror and know how to use it, and they'll be startled and irritated that you didn't look to see whether anyone was behind you. When you turn to look back, however fleetingly, they can assume you've seen them.
MeanHoo 1 PCS Bicycle Rear View Mirror Bike Wristbands Viewfinder Retroreflector Wrist cycle Accessories Rear View Mirror Safety Mirror Bicycle Parts - B01M2C60XE