These are so awesome! they are motion activated so when they are not riding their bike the lights go off. One thing you have to remember though is they have little batteries in them so unscrew the bottom and take the little white square of paper off or it will not make a connection. These are super easy to install and come with everything you need. These will give your children endless hours of night riding fun and are super affordable. If you would like to check this product out click this link
- * Light up your bike at night with the Speed Racer rim lights - Choose from three different styles
* Motion sensor LED technology ensures durability along with 50,000 hours of lifetime
* Easy to install - simple attach LED wheel flash light to valve stem on bike. Fits almost all bikes.
* Package includes A 3 pack of 2 x green 2 x blue 2 x colorful LED Valve Bike Lights
* Speed Racer is rust resistant, 1100% waterproof and usable through any terrain.