It's a jungle out there, so help your child or grandchild gain essential skills while having a blast with GraviTrax Junior Starter-Set — Jungle! Watch your favorite child discover their inner engineer! Now young kids can enjoy the thrill of watching their ball roll through a fun jungle marble maze they made themselves! GraviTrax Junior — Jungle is an interactive track system for children ages 3 to 7, with pieces sized for little hands. Easy to assemble with tons of possible track layouts for hours of repeat play! Themed expansion sets add to their marble run fun, and it's sustainably made! Makes a great birthday or holiday gift! With GraviTrax Junior, building and playing fun is always on track! This creative, expandable system is especially designed for younger children, challenging them to use their imagination to build their own marble runs! STEM-friendly concepts build critical thinking and problem-solving skills. Completely open-ended, this Jungle Starter-Set contains everything needed to build a variety of tracks. Expansion sets are easily added for even bigger fun! With many parts made of wood bioplastic, you can feel good about giving your favorite child a sustainable toy that will provide years of fun, educational play! Ages 3–7. Comes complete with instructions, 6 baseplates, 3 marbles, 34 height tiles, 1 bridge, 4 straights, 4 slopes, 11 big curves, 4 small curves, 1 starter two-part, 1 finish, 1 hammer, 1 seesaw, 9 3D decorative elements, 5 cardboard animals, 6 base stones, and 6 decoration caps.