OSPORT Lightweight Full Carbon Fiber Bicycle Water Bottle Cage Holder, 18g - 1 Piece Review

I bought two of these bottle cages for my road bike and have ridden them 4 times. So far they're working great. I'm really impressed with how light they are. I was worried they would tear because they are so thin when I take the bottle out. But so far they work great. They feel very strong. The bottles are very safe.

I've ridden about 2500 miles with these cages and the bottle has fallen out twice on very bumpy stretches of road. . All in all I would not expect more from such a light and cheap cage. If you're happy with the possibility of a bottle falling down really bumpy stretches of road, there's no better cage. I would happily mount them on any road bike and will continue to use them on mine.

Two of these were installed behind my saddle and my water bottles disappeared at the end of my driveway. I thought maybe the hit was too big, but then I lost both bottles again and just made a smooth turn at high speed. The TT bike only has cage mounts on the down tube so I slipped one in there and all is good. I even did some test runs over big bumps and was hesitant to fit it to a seat tube mount for fear of losing the bottle. I would categorically NOT try them on MTB. According to my scale…