Saferoller is a safety solution with an integrated trolley for the continuous and completely safe transport of customers in high ropes courses, climbing and adventure parks. Saferoller was developed for the whole family and is suitable for children of 4 years or older as well as people with reduced mobility or a mental disability...

Unless you have very thrillseeking customers and loads of money to build this structure, I would recommend a easier and much cheaper freefall device...