This is a balance ball cover that also functions as a globe (with handles). Simply placing it in your living room allows you to use it as a balance ball, chair, globe, and interior decoration. It's made of a stretch material that resists wrinkles. How to attach: 1. Deflate the balance ball. 2. Insert the balance ball into the cover. 3. Position the air inlet at the zipper. 4. Inflate the ball and plug it. 5. Close the zipper. The size is designed to fit a 52cm balance ball, which is between soft and hard (slightly harder). This is a completely original product. From the fabric (data creation) to sewing, we take the time to handcraft each one, carefully aligning the latitude and longitude lines. The printing is done at a domestic fabric printing factory. *The diagonal lines in the photo are on the balance ball itself. *The balance ball itself is not included. *Resale for profit is prohibited.