Dear Skye, Any of our water inflatables can be used without water, but in some cases, it is not the best idea because the slide is designed to be used with water. With regards to the Hydro Rush, because water in the splash area helps to stabilize the base, we do not recommend using this product without water. If you're looking for an item that can be used dry, a bouncer and slide combo would be a better choice. Sincerely, Blast Zone Support