Ifollower Marble Run, 150Pcs Mable Track Race Toys for Kid, Upgrade Marble Maze
Upgraded 150Pcs Marble Run Kit with Transparent Parts: Ifollower 2025 NEW Launched marble run set contains 90 transparent pieces, 30 glass marbles and 30 plastic marbles. Children can clearly see the marbles moving through the tube, which effectively trains their concentration.