Review on Stay Safe And Stylish On Your Bike With DAWAY LED Wheel Lights - Waterproof And Fun Patterns Included! by Aaron Masek

It goes on really easy, works well, the kids love it. Haven't had to replace the batteries it came with yet, but it's only been about a week and a half. Would buy again, bright colors, it just works. I wasn't sure if the kids would go fast enough to trigger it, but it triggers as soon as they start moving. Easy enough for my five year old to figure it out. Seems durable so far, and the kids haven't been easy on it.