Tyler had one and loved it. I bougjht it through the Abilities catalog I believe. If you are interested, I will look through my files to be sure. He had a neoprene jumping vest which was held together with neoprene fasteners. There were four round hooks on both the front and back. These were attached to bungees straps that allowed him to jump and bounce. I have a picture of him in it if you would like to see it and if I can figure out how to put it on here.