GraviTrax Expansion Trax skyboard and visits the world’s most

and visits the world’s most famous landmarks

quick play time and great art will make it a favorite for the ages

Commander Gregor and Commander Wolffe

MESS-FREE SENSORY ARTS AND CRAFTS FUN: A great addition to your child’s collection of sensory toys

GraviTrax Expansion Trax skyboard and visits the world’s mostThe 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