These fenders a light, easy to install, and work as advertised. As a bonus, they match my bike colors, but that was not consideration for purchase. Have been using them for about 6 months now, and they have remained solid and in place, without getting in the way. My only complaint would be the price, but on the flip side the minimal material means they are light, and as indicated earlier, they function very well. If I needed another pair, would not hesitate to purchase these again.
My 2018 Giant Defy has no rim brake mount between the seat stays. In order to attach the rear fender mounting tab I fabricated a bridge and fastened it to the frame using the built-in threaded inserts there. Another simple adaptation was to reshape the SS fender braces slightly to avoid interference with frame bits and fasteners at the dropouts. Otherwise installation was straightforward. Quality of materials is excellent and the final fit is very snug. The fenders work well. After several 30+ mile rides on sloppy wet, leaf and pine needle-strewn roads (it is Fall in the PNW) the bike has been surprisingly clean as were my shoes, socks, pants, etc. The only downside? Climbing up a grade over heavy drifts of wet pine needles, the needles collected between the front fender and the tire causing so much drag I thought I had a flat. Couldn't pedal against it, had to stop. Rotating the wheel backwards disgorged a fist-size wad of needles jamming me to a stop! Otherwise it's been smooth sailing. I'd buy them again.
I've been using these helmet mirrors for many years, and rely on them continuously to keep aware of what may be coming up from behind, be it a pack of riders, a fast moving car, or a large truck. I have now supplemented this awareness with a Garmin Varia rear tail light with radar. The combination works great to keep me as safe as possible on the road. Only draw back is when I get off the bike and take off my helmet, I still find myself just tilting my head to see behind me, forgetting the mirror is no longer there.
I have tried other detachable rear fenders and this was the most well designed because the parts that attach to the seat-post are very strong and the actual fender material is extremely thin and light. Since it is deflecting rain and mud etc., it is sturdy enough for those sorts of things.
The other thing that I like about this fender is that it does not shift around all the time like other detachable fenders. I think because it is made of very light thin material, if the bike gets a lot of torque left or right, the fender hangs on the seat-post better because it has very low mass.
