Skyrail Rollercoaster Maxi Rail (16 metres - 250 pieces!)

With Roller Coaster you can build fantastic marble suspension tracks up to 18 yards long.  Your toy will immediately become the best thing in the room!  Roller rcoaster has been carefully planned in order to use marbles of different dimensions and materials: it allows you to make interesting observations, experiments and discoveries in the world of physics (speed, gravity, strength, centrifuge, attrition) and to intuitively understand fundamental principles.  The Roller Coaster is a safe way to spend hours in a highly educational environment.

7+