This is a Giant Whale Slide. It can be used as a dry or water slide. As a water slide, water pipes can be fixed to the top of the slide and water will spray out to the slide surface. Its long run-out end will make the slide safe even for a water slide. The vinyl used is 18oz, 1000D, anti-UV, anti-fungus, non-toxic, and lead free. Due to its anti-fungus quality, there is no need to worry about mildew.