GraviTrax Expansion Trax International Playthings birds and many more to

birds and many more to discover

(And they are mannerly guests too - never leaving a trace of their presence

Each unique configuration promotes hands-on experimentation

metallic and glittery self-adhesive foam pieces

GraviTrax Expansion Trax International Playthings birds and many more toThe Extension Trax contains many different basic components and 6 balls to extend the ball track. Combined with any GraviTrax starter set, the Extension Trax brings even more variety and ball fun to the GraviTrax universe. How much longer can the ball roll with the new elements? GraviTrax is a flexibly expandable, interactive marble run system for children aged 8 and over: With GraviTrax, children, teenagers and adults don't just build simple marble