This is a form of recreation that involves rolling down a hill in an orb. I bet you are wondering what and orb is. Well it is two balls made of transparent plastic. A smaller ball is placed inside a larger one with a gap of air in between the two. The layer of air acts as a shock absorber. Inside the ball there is usually a harness attached to allow the rider to stay securely fastened down when rolling down the hill. However, not all orbs roll down hills. Many times people are not in an area with hills so they have to be innovative. When there isn't a hill around riders often construct inflatable, wooden, or metal ramps.
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