Airhead SPORTSSTUFF 53-1790 Chariot Warbird 3 Triple Rider Boat Towable Tube

We use this tube for fast, exciting rides for teenagers and young adults, even in very rough water. The tube bounces a lot when fully inflated, but it does not flip over sideways because the wings on the side resist that action, even when the weight of riders is unevenly distributed (with a heavy person on one side). Many tubes will flip over sideways, suddenly, when a large wave is crossed and the tube leaves the water. This happens with tubes that have no wings on the side, and the people riding on each side are directly next to the water's surface. I have had tubes without wings flip over completely, suddenly bouncing into the air and dumping the riders out into the water, which can cause injury. This tube does not do this, in my experience, because the wings extending beyond the outside riders catch the water and keep the tube from flipping over.