Marble Track Recommended age from 4 years The Marble Run Vortis Ball Runner allows each small builder to create his own ball track and enjoy hours of great entertainment. Build the model according to the enclosed design or design your own design. The package includes sliding slides, bridges, columns and paddle wheels. Thanks to this, everyone has an almost endless variety of possibilities to enjoy the time spent in creative gaming. Kit is recommended for all children from 4 years of age.