Description: Material: The DIY material package is made of premium wooden with smooth edges and can be used for a long time.Design: The invention material pack is carefully crafted from a variety of components, allowing children to make their own works based on different materials.Easy to Assemble: This children's car material set is easy to operate, and both adults and children can assemble and play. This is a good parent child interactive game.Education: Children's science and technology teaching material package is not only a fun activity, but also improves problem solving abilities, spatial reasoning abilities, and fine motor abilities.Gift: Science crafts are the first choice for childrens birthday gifts, party gifts and other people in need. Specification: Material: Wood Size Chart: 20cmx14cmx9.9cm/7.87inchx5.51inchx3.90inch Package Includes: 1 Set DIYSolar Car Note: 1.This is not an infant toy, please take it away from children to avoid eating.2.Please allow slight errors due to manual measurement and different monitors.