Attach the rearview mirror to the helmetsunglasses. Twist and turn to adjust for maximum coverage and off you go. Not only that you can see how the paceline is conforming behind you but you will also see a car approaching from the back. Safety above all else!
Granted it looks a little dorky, but now that I have a mirror I don't feel complete if I am on my bike without one.
I prefer the head mounted mirror to the handle bar mounted variety, less vibration, easier to control field of view.
It is easy to mount on a visor, but not on a helmet with out a visor. Found an attachment device the works pretty well. Once mounted in a good location it is easy to a line the mirror for looking at approaching traffic. It is very light weight and good visual field.
This mirror fits on the arm of your glassessunglasses. It is easily adjustable and you can rotate the mirror to your personal preference. You would be surprised at how much you can see with this well made, lightweight mirror.
I am car-free and wear this mirror attached to my helmet visor. It allows me to keep track of what's going on behind me without constantly turning my head around. While no substitute for scanning by turning my ahead around before merging into traffic or a left turn lane, the mirror saves my time by allowing me to monitor traffic and pick a better time to make my move. I see many, many experienced riders wearing these, including long distance tandem tourers wearing one on each side.
I love the elegant infinitely adjustable angles. It was easy for me to set up, and I find the mirror an extremely helpful tool without being a distraction. Super light and strong.
Other reviews explain all the great points about this mirror. I mount mine on my glasses and never notice any weight or other comfort issues. It is easy to remove after biking. I'd think helmet mounting would expose the mirror to much impact when tossing the helmet around after biking.
Longer than some that I have seen. Works well, but end that attaches mirror detaches rather easily. My frames have triangular shaped temples and these would work much better with flat ones.
I attached the mirror to my helmet visor. Took awhile to adjust the mirror and make myself look out of my left eye. Once that was mastered, the only thing is at each ride I had to readjust the mirror as the helmet gets bumped around - taking in on/off and stored. These are not big issues - we all adjust.
This mirror fits securely on my glasses and is fully adjustable. The size is enough that I have great visibility. I have tossed the other mirrors that I own and use only this now.
I use this in group rides and in traffic. Good to know when being overtaken by vehicular traffic, good to keep an eye on people riding behind you. Can't see off the opposite side unless you put a second mirror there, though. Easy to adjust while riding, can be a little tricky to fit some glasses (e.g., those with very thin or oddly shaped ear pieces), but pretty adaptable.
I've been commuting more and more on my bike, so I decided to stop snapping my neck looking over my shoulder and get a mirror. I got the compact model, trying to get the lightest one. I have thin painted metal arms on my glasses, but the mirror's 3 point mount had no problem squeezing onto the arm. There's a left-right adjustment and an up-down adjustment. I'm sure you can set it up to get the angle you like. I have mine set so that I still look to my left maybe 20 degrees to see straight behind me. I figure that way, cars will still see that I'm checking.
The brass sleeves that let you do the adjustment are tight, so that once you make an adjustment, they don't slip. I've dropped the mirror quite a few times and neither has anything scratched or broken nor has it come off adjustment.
The only complaint I have about it is still weight. I wear my helmet straps over my glasses, which I guess is not fashionable in some quarters. Between that and the limited range of angles my head is at when riding, my glasses sit fine. But if I need to get off and check my bike or otherwise look really far down, the weight of the mirror is enough to start dragging my glasses off my nose. I'm going on a bike tour soon and definitely plan to bring a croakie to secure my glasses.
If I lose or break this mirror, I'm definitely getting the same one again.
After 30 years of riding this is my first mirror purchase and I couldn't be happier with it. Takes a while to get used to it and find a position that works, but once you figure out what works for you it becomes second nature to use it. Absolutely no issues with vibration or movement while riding. Biggest problem is moving it by accident when I forget I am wearing it and strike it with my hand or arm...operator error. Great tool for safer biking.