1. Material: plastic 2. Applicable objects: juvenile (7-14 years old) 3. Self-assembly toys, conducive to the development of children thinking ability and hands-on ability 4. Home objects can also become part of the track, build no limitations 5. Unique body track design, adapt to a variety of surfaces 6. Parents can play with their children to cultivate parent-child relationship 7. Smooth and burr-free edges, no need to worry about hurting children hands 8. Car battery: AAA batteries x 2 (shipping does not include)
