according to the NPD Group. Abracadabra, presto, chango — your marble run just added some colorful, magical fun with the “GraviTrax Color Swap” accessory! [INNOVATIVE] The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, kinetics [STEM TOY] Boys and girls ages 8 and up can experience educational and science play. Lasting durability for girls and boys ages 8 and up, it’s the learning toy children (and savvy adults) return to over and over again! GraviTrax Color Swap (Accessory) - Awesome Toys & Gifts Replacement Parts [GREAT GIFT] GraviTrax is an a ideal holiday and birthday gift for creative, curious kids and adults who love to build. Gravitrax Color Swap - Dr. G's Brainworks Bring a new element of surprise into your GraviTrax marble run! As if by magic, the marble changes color as it passes “through” the “Color Swap”. Color Swap - GraviTrax - The Red Balloon Toy Store GraviTrax construction sets use STEM-friendly concepts while building critical thinking and problem-solving skills. [COMPATIBLE] Easily extend play time - All sets are compatible and functional with all GraviTrax systems It’s a creative, modular, expandable track system that challenges children to use their imagination to design and build their own marble runs! Completely open-ended, every GraviTrax set has a boredom-busting variety of play options for hours of fascinating fun. Once the basics are mastered, simply add expansion sets and accessories to propel those metal marbles around the tricked-out track of your dreams!
Free 30-day returns 
Free 30-day returns
