For optimal performance, it may be necessary to re-inflate your new Balance Ball once or twice after the initial inflation. Once your chair is assembled and the Balance Ball is inflated, re-check the ball size the next day. If necessary, add additional air and check once more the following day. Your new Balance Ball may need a day or two to "stretch" to its final size (which should then fit perfectly in the base).
If you need other replacement parts for your Balance Ball Chair, please email customer service at email@example.com Size: 52cm (20.5")
Made from vinyl, no latex content.