Best Gift for Kids - Four different colors of glowing track cars can attract children's attention and make them feel happy. Parents can interact with children by choosing one of the cars and acting as a driver with three different functions. It can not only strengthen family bonds, but also educate children about traffic safety with the help of these track cars. If you want to know more about this track car, please watch the video at the end of the picture! Safe and Easy to Play - These extra track cars are made of environmentally friendly, non-toxic plastic materials, which are safe for children. For these racing cars, the power switch is on the bottom. The child can easily operate it independently and have fun! Each toy car requires 2 AA batteries (not included). We recommend purchasing rechargeable batteries to save battery costs. Cool LED Glowing Track Cars - These four cool racing cars have 5 LED lights that children will be attracted to and enjoy. But for this glowing design, the plastic must be thin enough. So these cars should preferably not hit hard objects or walls hard, and not fall from high places to protect them for long-term use. Fits Most Track Sets - These track cars are compatible with most track sets, including dinosaur toy tracks, rainbow tracks, and so on (the inner width of the track should be at least 2.17 inches). It can also be played on any smooth surface independently to stimulate children's imagination.