Unlock infinite possibilities with the GraviTrax Starter-Set Bounce, a unique and interactive track-building system designed to create marble run action like never before. This set includes 101 pieces and features two exciting action Elements that add wow-factor to your tracks: send your marble round and round the bend with the Spiral Element, and bounce your way to the finish with the 2-part Trampoline Element. Whether you follow the included track layout plans or let your imagination run wild with twists, turns, and trickshots, you can challenge yourself, experiment, and take the action further than ever. Compatible with all other GraviTrax sets and accessories, this starter set allows you to grow and expand your GraviTrax world however you choose. Suitable for children aged 8 years and up.