I purchased this for my 9 year old son's bike. The first day I put it on his bike, a friend pumped it and broke off the clip on the back of the light that attaches to the seat post mount. It was a thin and fragile clip. With that clip broken, I can't attach the light to the seat post mount. I used electrical tape to be able to still use this, but will have to remove and redo the tape every time I want to charge the light. I bought two of them and the one on my other kids bike fine works and is nice and bright.

Stopped working after first use. Total waste of money. Not a good deal. Too late for me to return.

At $15/light, this is a very good light set for either a front/rear light setup for one bike, or a couple rear lights for two bikes. I rarely ride in the dark, but prefer to use flashing lights on my bikes on non-sunny days. This has to be the brightest rear light I've ever used, even brighter than the Planet Bike SuperFlash I bought over a decade ago. I kinda wonder if this would be TOO BRIGHT at night. I like how the rear flashing light can be put on the front and used as a headlight if needed in a pinch. The USB recharging feature is very nice to not have to keep putting in batteries. But of course you have to remember to charge it when needed. When you turn it off, the light glows green to indicate if the charge is still good, otherwise it lets you know when you need to charge the light. EXCELLENT VALUE for $14.50 per light, so good, I bought 8 total and have them on all of my family's bikes.