Feature(may vary by option.)
●The GraviTrax FlexTube extension is an ideal addition to the interactive marble run system.●Four FlexTubes allow you to connect different heights in flexibly selectable shapes. In addition, the extension contains four height stones.●All GraviTrax sets can be combined with each other for long-lasting fun.●The construction toy provides indoor building fun for the whole family, whether beginners or advanced users. An ideal gift for children aged 8 and up with a GraviTrax starter set.●The innovative marble run allows for free, flexible construction and promotes creativity. Children learn the laws of physics in a playful way.[Flextube extension - old packaging design]
[Flextube extension - new packaging design]
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