NELboNsNELboNs Bike Goggles Rearview Mirror 360 Degree Adjustable Lightweight Wide Angle Rotatable Glasses Bike Mirror 1 Piece(Not Included Glasses,Self-Provided Glue)

Easy to install. They are stable and stay in place. Nice wide rear view mirror. Safety must for cyclists.

I guess the arms of your glasses have to be VERY big to mount properly... what a waste of money.

Cheap made. This item didn't fit on my oakley racing jacket glasses. I would not buy

Works for seeing cars coming up behind me. It can be adjusted side to side and up and down and I do need to reposition for each ride but that's expected for something that mounts on glasses. It feels stable but I do have sunglasses with tall arms. For narrow frame glasses, it may be unstable. I do feel that the mirror can be higher to reduce the blockage of my field of view. Perhaps if it didn't have that final arch down at the end and/or if the mirror was mounted on the side of the arm instead of below.

For years I’ve been looking for another Clip On Eyeglass Bike Mirror. All others have the slide on type but they pop off.This Model has a cool Clip Feature

I could not figure out how to make these usable.They went in the trash

great product for bike riding love it

tried 6 sun glasses before one that this would mount to and it's not a firm fit. Might be OK if you happen to have the right glasses