Trestle Tracks Deluxe Set book board book It's never too early to

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Trestle Tracks Deluxe Set book board book It's never too early toA truly mesmerizing marble track experience! Each set is made up of hollow stacking cubes and a variety of perfectly flat tracks. The paths cut out of each track widen almost imperceptibly from one end to the other, creating an invisible slope that propels the marbles forward. Watching them go is like magic in slow mo! Get creative and discover the wonders of simple engineering with Trestle Tracks. Ages 8 and up.