The Tunturi Gymball Cover is designed for a 75 cm diameter anti-explosive gym ball. Its weighted section at the bottom helps prevent the ball from rolling away when you sit on it. The green zipper closes the cover, and the handle makes it easier to move. The cover can turn a sitting ball into an office chair; while sitting on the ball, the body constantly adjusts its balance, exercising the core and back muscles.
Tunturi’s roots go back to Finland, where two brothers started a bicycle shop in 1922. Now, over 100 years later, it is a Dutch company and a global brand.
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