A springboard jump... with 2 elastics

Stick you, it smells extreme adrenalin, unique to the world, and that is all the rage in France. It is the eXtreme jump Bun J Ride. Amateurs of very strong sensations, you go to be served: not only you go to make a jump of 40m in the space, but in more you go to make it launched on a bike, a sled, skis or snowboard with freestyle figures if you want