Ravensburger Gravitrax Trax Expansion Set

EXTEND YOUR MARBLE RUN: With the GraviTrax Trax Expansion set, add more fun and excitement to your GraviTrax experience - Now, there's no limit to your marble run adventures INNOVATIVE STEM TOY: Encourages children to experiment with gravity, magnetism, and kinetics, fostering their interest in science while promoting creativity and problem-solving skills GLOBALLY LOVED: Our franchise has sold over 15.5 million units worldwide, making us the No.1 marble run system in the U.S. - Trust in our experience and join millions in the GraviTrax community COMPATIBILITY GUARANTEED: All our sets are designed to work seamlessly with all GraviTrax systems - Extend your playtime and possibilities, without any worries about compatibility issues PERFECT GIFT IDEA: GraviTrax makes for the perfect holiday or birthday gift for creative, curious kids and adults alike - Give the gift of endless building fun. Kw: marble, run, gravity