Designed to be worn with glasses, this minimalist racing mirror fits exactly into the M2Racer mind set. Offering the most with less, The M2 Racer Stealth Mirror is optically pure and weighs almost nothing.
I ride with a helmet mirror. I feel lost without one. Usually I use the Blackburn (formerly Rhode gear) arrangement that sticks a mount onto your helmet and then clips a shaft and mirror onto that. Compared to that arrangement the M2 Racer Stealth is simplicity personified.
You merely slide the temple piece of your glasses (prescription or sunglasses) into a non-slip rubber mount consisting of two moulded loops and a main mounting body. The rubber is non-slip enough that it keeps the mirror shaft where you put it relative to the glasses. Unlike your helmet, or at least my helmet, the glasses (and this translates to the mirror) don't tend to move around as much. So, unless disturbed, the mirror remains adjusted where you put it. Thus, a quick glance or eye movement has you readily picking up your rear view. (M2 Racer disclaims, The Stealth Mirror does not provide total rear-view coverage. Make sure to use normal and safe viewing practices at all times. The use of the Stealth Mirror is intended only as an added visibility tool.)
I found the adjustment of the mirror (by bending the shaft) to actually be easier and more accommodating than the ball and socket mount of the Blackburn which limits the adjustment range. However care must be exercised to be certain that the mirror disc is not dislodged in the process of adjusting the shaft. This is relatively easy to do, and M2 Racer recommends checking the mirror mounting prior to every ride. One other caution, the rubber loops are very sticky and they must be treated with respect. M2 warns that excessive force can cause the loops to part. But handled properly years of service can be expected.
This is a delicate, light weight piece of equipment designed for the high performance rider. Perfect for someone who notices if their seat has slipped a quarter of an inch, or if their clip release tension is off an ounce or so, someone who rides exactly the same configuration every time they go out. It will not withstand continuous adjustment and tweaking. It wants to be set and then carefully handled to avoid disturbance of that adjustment. Given these limitations and being born of competitive/high performance design considerations, this is a great mirror for the serious rider/competitor.