GraviTrax Element Colour Swap counting Sure it's over the top

Sure it's over the top

the floors are furnished in a lovely natural wood look to complement the lovely wallpaper designs in each room

The other pen will not only reveal the information

Build a whole army to protect your yard in minutes

GraviTrax Element Colour Swap counting Sure it's over the topBring a new element of surprise into your GraviTrax marble run! As if by magic, the marble changes color as it passes through the Color Swap. Simply hide a marble within the tunnel the momentum from the incoming marble propels the hidden marble out the other side with the illusion the marble changed colors! Its a snap to combine Color Swap with any GraviTrax Starter Set to experience the power of gravity and educational fun today! What makes a great