Bests & Worsts Reviews from Amazon

A rear view mirror is a MUST for anyone riding with traffic. HELMET mirrors are NOT for everyone as they do require some getting used to. It took me at least 2-3 rides before I got used to it. I've been using one since 2003 and do not feel safe without one. Helmet mirrors do a better job as you can still have a blind spot with the bicycle mounted mirrors - I have my helmet mirror set so I can see my shoulder and the side of my head. This gives me a clear view of traffic behind and to my right. By turning my head 30 degrees to my right, I completely "sweep" to all lanes on my left side. I've tried this and the Blackburn helmet mirror. This one is definitely better. MINUS - Does not remove (the Blackburn pops off the base so you can remove it offroading, for example. Don't lose it!) PLUS - Shorter arm is stiffer than Blackburn (it's an I-Beam section) - Adjustment range is better than Blackburn - Lighter mirror vibrates less than Blackburn Note: The helmets I have used them on are the Giro Atmos, Giro Animas, Bell Forza II and Bell Phi II [...]!