Clever Up! Building Block System 1.0Welcome to HABA's Clever Up! Building System. These building blocks are perfect for early building. The cube is the base element, supplemented with panels and strips. They can be used to build tunnels, towers or bridges. Even young builders can explore, line up and stack the building blocks. Later, they design more complex patterns and their first buildings. The panels and strips help build bridges, inclines and levels. The building block set makes