A large box filled with high-quality and durable plastic building material: the Hubelino Marble Track KIGA School Set Track Elements. This contains 156 building parts over which you can roll marbles, including various slopes and curves. Use your imagination and creativity to make the best marble runs or use the examples in the instruction booklet or on the Hubelino App. The Hubelino Marble Track KIGA School Set Track Elements includes 16 marbles. Please note: with this set you also need building blocks to build vertically!