This is a good quality sissy bar. I have used them on kids bikes and they worked fine. I decided I needed a banana seat bike for myself, though, to ride around with my youngest daughter and then I had a problem. I weigh 240 pounds and the bar would, over time, slip down a bit in the clamps. So I bought two hose clamps and clamped them right above the bar clamps. This extra "help" kept the bar from slipping in the clamps.Anyway, I never had a problem when I used it on a kid's bike, even kid's weighing over 100 lbs. My weight was just too much.