Review on BriskMore Bike Mirrors - Set Of 2, Bar End Rearview Mirror For Bicycles With HD Glass Convex Lens, Enhanced Safety For Cycling by Cory Whitney

My previous mirror was helmet mounted, so the image from this mirror is much superior and less bouncy. This is very much a "objects are closer than they appear" mirror. A car that looks a football field behind you is only 25 yards behind you. On the other hand, being so convex makes it insensitive to head position. It works well without much adjustment whether standing on the pedals or on the drop downs.