Skyrail Wall transforms your walls into a spectacular roller coaster where you can set exciting marble runs, changing the track so that its different every time. Thanks to the special UHU patafix adhesive putty included, all the parts of the course can be attached, detached and re-attached to walls or any vertical surface, without damaging them. With SkyraiI Wall it is easy to construct different tracks. Figuring out how to run the plastic ball along the course allows you to make interesting observations and carry out experiments to understand the basic principles of physics (velocity, gravity, friction). All this makes it a toy with exceptional and unique educational value, guaranteeing many hours of practical, educational and safe fun.