What kind of water is used to lubricate the sliding pad of the rainbow slide?

Soapy water. When sliding on the sliding pad of the rainbow slide, soapy water can make the surface smoother and improve the sliding effect of the slide, and the cost is lower, so it is a more suitable choice. When using the rainbow slide, you need to take safety measures, such as wearing appropriate sports shoes or knee pads, to protect your own safety.