I ride with a helmet mounted mirror and added a left side anti glare handle bar end mounted mirror. Seem to work well for awhile but felt like I always missed what was behind me on right hand side. I wanted something sleeker vs huge mirrors so tried out the Topeka bar n mirror. I had to move the ergon grips in a bit to mount them on each side. They are relatively narrow but once you get used to them they give you enough visibility to see what’s behind you. May not work for everyone because of the narrow range of view . I do like the fact that they fold up flush and look like traditional end bar grip bars to prevent any knocking or catching on bikes that are locked next to mine at work.