The water catapults are made of a tarp-like material called Tarpaulin. They are all .9 mm thick. The material is fire and tare resistant. A repair kit and a pump comes with each purchase of a catapult. A water catapult is a very popular summer toy used primarily by summer camps and lake/boating enthusiasts.
There are a few geographical needs that exist in order to successfully experience the water catapult in its fullness. A tower, or any high structure such as a cliff is needed to jump off of at a height ranging from 10-30 feet above the water. The water needs to be at least 10 feet deep 30-50 feet off of the shore to ensure that the users do not get injured by rocks etc.