Water Bounce Inflatable Water Game Water Trampoline Sled Slide Introduction It is an outdoor water activity in which a participant sits on the end of a partially inflated air bag (known as a water trampoline) and is then launched into the water after another participant jumps onto the air bag from a platform on the opposite side. Various tricks may be performed while the participant is in the air. The recommended height for the tower is 15 feet above the water surface, or 10 feet above the air bag. size : 8m x 3m