Zorbing is an activity where the riders enter into large inflatable plastic balls and ride along the ground, on water or down hills.

The balls have two transparent skins which are connected together by wires and a tunnel by which the riders enter the ball. Air is inflated between the skins which forms a cushion to protect the riders.

Zorbing can also be done with water filled in place of air between the two skins of the ball with one or multiple participants.