Put a bounce into your marble run fun with the GraviTrax Trampoline!Bounce your marble run fun up to new heights with the GraviTrax Trampoline! With 2 specially angled height tiles and 2 springy trampoline tiles, your racing marbles will bounce their way to tracks and components waiting on the other side. How cool is that? Since all sets are open-ended, adding this accessory to any GraviTrax Starter-Set is a snap. Bounce your building skills up a notch and race your marbles to the finish as you experience the power of gravity and educational fun today!What makes a great toy? GraviTrax checks all the boxes! Its a creative, modular, expandable track system that challenges children to use their imagination to design and build their own marble runs! Electronic-free, GraviTrax construction sets use STEM-friendly concepts while building critical thinking and problem-solving skills. 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!Comes complete with 2 Trampolines, 2 angled bases and instructions.Lasting durability for girls and boys ages 8 and up, its the learning toy children (and savvy adults) return to over and over again!