AIR-POWERED FUN: This STEM toy is a set of extra Toobz and balls for expanding your Air Toobz builds, a kid-safe turbine to send foam balls flying through a network of modular tubes, making airflow experiments exciting for toddlers or kids 3+. ENCOURAGES CREATIVITY: This expansion pack comes with enough tubes and connectors to double the length of your Air Toobz build giving countless ways to experiment with airflow and physics, promoting creative problem-solving and building skills. ULTIMATE AIR TOOBZ ADDITION: Includes 6 transparent 12-inch tubes, 6 transparent orange corner tubes, 12 easy-fit connectors, and 10 colorful EVA foam balls to experiment with bigger builds. STEM LEARNING: These toddler toys encourage spatial reasoning, experimentation, and STEM learning, making playtime educational and fun, great science kits for kids 3+.