Introducing the Ravensburger GraviTrax Ball Box, a must-have accessory for any GraviTrax enthusiast. This set includes 4 stackable boxes, each designed to snap shut securely, and 12 new marbles. The GraviTrax Ball Box is perfect for organizing your marbles, ensuring you are always ready for your next race. The GraviTrax interactive track system encourages children and adults to design and build their own race tracks, offering a hands-on experience with gravity, magnetism, and kinetics. This set is compatible with all GraviTrax systems, allowing for easy extension and increased play time. As a STEM toy, GraviTrax sets provide an educational and fun play experience, perfect for both boys and girls aged 8 and up. The Ravensburger GraviTrax Ball Box is an ideal gift for creative, curious kids and adults who love to build. Unleash your imagination and start creating your custom marble runs with GraviTrax today.