RavensburgerGraviTrax: Jumper Accessory| STEM Toy for Kids Ages 8 and Up | Compatible with All GraviTrax Systems | Ranked No.1 Marble Run System in The U.S

This game is extremely fun and truly teaches a child or an adult to understand how Gravity affects the steel ball bearings and how bridges work! It also teaches a child how to follow instructions and ultimately, their own imagination. I’m a senior and my grandson is 11. I recommend purchasing the large starter kit first, then decide on these extensions.

This product is awesome. Probably the best toy my kids have; its a but addictive though and you constantly have to buy extension sets.

My 9yo says "Its great Makes my Gravitrax system do even more cool stuff" 😲

christmas gift for a young boy who loves it

Came quickly. Item matched. Perfect condition.

My garnson absolutely loves everything about gravitrax. This Jumper was exactly what is said!

Worked great out of the box, however after using it a dozen times or so it had a hard time staying in the down position as the latch wouldn't catch. I used a knive to give it a "lip" to hold on to and that seemed to help. The Gravitrax Scoop does the same thing..........but much better and works every time. I would recommend getting that instead.

My son had the jumper for not even 12 hours and it won't work right already. When the marble is rolling down the track, the shacking of the track triggers the release on the jump mechanize, and it jump to soon. This looks like a design flaw. It could probably be redesigned to work but the way it is make now it won't work right will be sending it back.