This is the construction set that allows children to use its interconnecting tubes and spheres to build a variety of structure configurations limited only by imagination. The kit’s 32 sturdy plastic tubes, 20 spheres, and four curtain panels provide the necessary building elements to create tunnels, mazes, forts, and theaters that challenge dexterity, encourage collaborative learning, and promote mathematical agility. A push of a tube into a sphere’s hole followed by a twist forms a solid connection that even small hands master in minutes. When a castle’s walls must yield to sleeping space or the crowd departs after a puppet show, structures separate quickly, stack flat and fit neatly into the carrying case. The included instruction manual includes diagrams for building structures such as soccer goals, limbo bars, or dollhouses. Ages 3 and up. (18 lbs.)