Many curves for crazy Kullerbu fun Large, adaptable and expandable ball track play world with many special effects Different heights for maximum momentum 1 archway with little bell, 1 steep ball curves, 5 curves, 2 straight tracks, 2 columns, 8 connecting elements, 1 start block, 1 ball Paul, 1 ball. Material: beech wood, plywood, metal. The Kullerbu play world gives children the opportunity to learn and develop important skills by playing. Kullerbu combines wooden and plastic parts, purposefully singling out the advantages of each material. The clever click system and the columns of different heights allow for maximum non-slip momentum. Kullerbu is a sturdy and colorful ball track that is fascinating and endlessly enthralling for children from 2-8 years with its optical and acoustic elements. The ball convertibles and vehicles with momentum motors ensure plenty of driving fun on the play tracks: The colorful speedsters race along the curves, and the emergency vehicles are on the spot in no time. The construction site vehicles are also lots of fun, and can transport the Kullerbu balls back and forth. Other accessory pieces such as the intersection, swing-switch rails and spectacular universal steep curve bring even more flexibility to Kullerbu play. Exciting theme sets offer additional variety. They can be easily combined with all play tracks, and are also perfect for free play. In the Kullerbu play world this means: Boredom? No way! This naturally also applies to the ball tracks. Paul and the other balls speed from one special effect to the next. We wish all small and big Kullerbu master builders lots of fun!