The Zorb has 70cm pocket of air between the person and the ground, keeping them safe as they roll around.

The zorb is then released to roll down the hill, the two men spinning inside.

The Zorb was invented to get from the beach to the surf and back again.

And Zorb made a mental note, and saw that it was good.

The Zorb can actually reach speeds of up to 50 kilometres per hour rolling down a hill!

Apparently the inventor was at the Zorb site today.

"We realised the situation was out of control when the zorb changed its trajectory and started to roll much faster," he said.

But the zorb quickly veers off course, with one man unsuccessfully trying to stop it.

When playing zorb football there are a number of different scenarios which can be played out:

The zorb continued rolling for about half a mile before finally coming to a halt near a frozen lake.

They say they want to question three owners of the zorb ride, who are reportedly on the run.

For a truly radical experience, try being strapped inside the Zorb and tumble down a hillside.

Wear the inflatable large zorb balls around your body and play Football - but the rules almost don't apply.

Arriving Rotorua your first stop will be for a unique Zorb.

The zorb is double-sectioned, with one ball inside the other with an air layer between.

A Zorb is a large inflated plastic sphere, with another sphere inside.

Actually, that didn't occur to me until after the Zorb stopped rolling and my screams had subsided into laughter.

People watching can be heard asking organisers: "What is down there?" as the zorb rolls over the edge of the gorge.

Sign up for the Zorbit run and you'll be harnessed inside the Zorb.

Mr Shcherbov said he had been talked into the Zorb by his friend.

A Russian article on the Zorb mentions a similar device having debuted in 1973.

You can also slow the brushbar, which is useful for applying Zorb dry cleaning powder.

Then there is the Zorb - an inflatable double plastic sphere where you roll down hill for 150 meters.

Wear the inflatable large zorb balls around your body and bump into each other as you try to wrestle in the most fun way possible.

Yet anyone inside the plastic zorb ball, hurtling head over feet at high speed, is more occupied with adrenaline than aesthetics.