The Clementoni Baby stacking tower castle combines a colorful castle design with an integrated ball run. Balls are placed into the top of the red tower and then roll down through the various levels. The construction consists of several colorful tiers in red, blue, green, and yellow, decorated with battlements and animal motifs. The ball finally exits through the castle gate at the bottom. Watching the ball playfully illustrates the principle of cause and effect. In addition, grasping and inserting the balls promotes manual dexterity and coordination.