A space hopper, also known as a moon hopper, skippyball, kangaroo ball, bouncer, hippity hop, hoppity hop, or hop ball, is a rubber ball (similar to an exercise ball) with handles which allow one to sit on it without falling off.
Хо́ппер ("space hopper", "skippyball", "kangaroo ball", "bouncer", "hoppity hop", "hop ball") — резиновый шар с ручками, которые позволяют сидеть на нем и не падать.