Marble run for toddlers? That's the idea of the famous Italian toy maker Quercetti. Only the marble are extra large and safe for tots. And the building pieces are sized perfectly for the little hands. And the number of colorful stacking pieces is just right to handle. Educational Toys Planet welcomes a new addition to Quercetti's building line, Quercetti Migoga Junior Toddler Ball Run. This marble run construction set for the youngest builders comes with 23 bright color chubby pieces including steady bases, bal tracks, stacking parts, curvy track, 2 straight tracks, and 3 super sized marbles. Each colorful marble ball is 1.5 inches in diameter, and some of them rattle while your tot is rolling it down this marble run. Quercetti Migoga Junior Toddler Ball Run is an exciting manipulative activity toy that is fun to stack up, fun to watch how the marble balls go from top to bottom, and fun to build and rebuild.