STEM Building Toys Wind tunnel Toy - air tubes science Experiment Kit toy, experiment, flexible buildable blocks, safe plastic material, gift for kids

【Air Tubes Toy with Rich Accessories】- Air tubes toy set includes straight tubes, elbow tubes, funnel, colorful foam balls, adjustable wind blower and storage bag. Kids freely assemble diverse wind tunnel structures, observe floating balls travelling in pipelines and intuitively learn basic aerodynamics through fun STEM experiments. 【Adjustable Speed Ball Run Toy】- Piece together air tubes to build custom pipeline layouts, power on the blower and twist the knob to adjust fan speed. Power off the unit before charging for safe operation. Watch foam balls float and hover along the track, and discover how wind strength alters ball movement. 【Versatile Ball Popping Toy】- Mix and match straight and curved air tubes to build vertical towers, winding loops and other pipeline shapes. Different builds create unique floating and bouncing effects, inspiring open-ended design and countless airflow test combinations. 【Ideal STEM Toys Gift】- A thoughtful pick for birthdays, holidays and kids’ milestone celebrations. Share sweet parent-child bonding moments while building tracks and exploring airflow science, combining educational exploration with lighthearted play. 【Safe STEM Toy for Kids】- Built with premium smooth plastic and polished edges for easy grip. Transparent tube design lets children track ball movement clearly, fostering patience and iterative hands-on science exploration.