Description: Science Experiment: This DIY balloon car toy set for young scientists. It encourages children to think critically and engage in scientific exploration, making it a tool for intellectual development and parent child interactionHands On DIY Components: The science experiment kit requires assembly, providing a fun and educational experience that enhances children's hand eye coordination and creativity as they build their own toyGift: Ideal for birthdays and holidays, this Scientific diy balloon car offers a unique gift option that combines fun with learning, making it suitable for children who love to and discoverMaterial: Made from sturdy metal, this Balloon powered cars DIY toys ensures durability , smooth surface, and sturdyCompact:The compact design of the Balloon launcher car toy set makes it easy to handle and store, allowing kids to enjoy their experiments anywhere without taking up too much space Size Chart: 11X8CM/4.33inchX3.15inch Package Includes: 1 Set Children DIY Balloon Car Toy Note: 1.This is not infant toy, please take away from children to avoid eating.2.Please allow slightly errors due to manual measurement and different monitors.