Features 1. DIY Assembling Electric Trolley: A STEM toy that combines puzzle-solving and logical route-building. Each track set allows for multiple configurations—children can freely assemble, disassemble, and redesign tracks to encourage creativity and hands-on learning. 2. Multiple Themes: Includes dinosaur, ocean, land, and space-themed sets. The kit contains various tracks, loops, and ramps that easily connect to create dynamic racing courses. Designed for shared play to support family engagement. 3. Brain-Teasing Challenges: The puzzle board features numbered indicators on the reverse side of each piece to guide layout planning. Promotes development of imagination, logical thinking, and problem-solving skills through progressive challenges. 4. Durable and Safe Construction: Made from high-quality ABS plastic with smooth, rounded edges. The small car moves automatically along the grooved track—offering screen-free entertainment. 5. Ideal Gift for Kids Ages 3+: Suitable for birthdays, holidays (Christmas, Easter, Halloween, Thanksgiving, New Year), classroom use, preschool activities, and indoor or outdoor play. Specifications Material: ABS Color: Multicolor Package Size: 26 × 26 × 3 cm Weight: 350 g Package Includes: 5-piece car track puzzle set or 15-piece car track puzzle set