These things are lots of fun. I bought two of the 28 inch hoppers for my wife and myself. It took me a few minutes to remember how it's done, but we were hopping in no time. Each hopper comes with an air pump. Your arms will get a workout filling these up. I would suggest that you use these on carpet or some other soft surface or wear elbow pads. I had to ice my elbow after a minor spill on our hardwood floors.
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