TMOYZQ LED Bike Wheel Lights, Tire Caps Neon Light Auto Accessories Bike LED Spoke Light Bicycle Wheel Lights Front and Back Decoration for Night Riding

They work.. ish. They don't stay on all the time or turn on and off predictably or reliably when riding. Turning them on is by tightening the light like a mini-mag. One worked well and the other not so much. It was fun while it lasted. I was hoping for better. It's hard to loosen them to turn them off without removing them from the valve stem. Material and assembly is a little cheesy and it's easy for it to fall apart if you aren't careful installing it. It was a lot of fun watching little guy riding when they worked. I might buy more if he asked for them in the under $5 price point. If he doesn't ask I'm not buying them again though. I don't like the multiple button battery stack and I have a feeling the puddles he likes riding through killed them. I'm not buying 6 new batteries to find out of they're just run down. I'd say save your money but little guy loved them when they worked. I'd drop $20 or more on a solidly made water resistant rechargeable version that worked reliably or came on with the inertial force of the spinning wheels.