About the product
- BUILDING EXPANSION: Elevate your Gravitrax experience with this expansion set - designed to add complexity and height to your marble run
- STEM EDUCATION: With Gravitrax, kids aged 8 and up can immerse in science, technology, engineering, and math in a fun and interactive way
- COMPATIBILITY: This set perfectly syncs with all Gravitrax systems, allowing for an effortless extension of play time and creativity
- RANKED #1: With over 15.5 million units sold worldwide, Gravitrax is recognized as the top marble run system according to the NPD Group
- IDEAL GIFT: Whether it\'s for a birthday, holiday, or just because, Gravitrax is the perfect present for those with curious minds and a passion to build
