Vivora Luno Premium Ergonomic Sitting Ball Chair, Felt, Max Size (25 to 26 inches), for Home Offices, Balance Training, Yoga Ball, Posture Improvement

I have had several high end office chairs. Not one have I liked more than this. My posture is better, my core stronger, and I don't get any kind of sitting fatigue/soreness.Also, I had one zipper issue and the company had a new cover to me in a week. Good product, good support, happy customer.

Ridiculous… I needed this for work and with tax I paid almost $90 for a rubber ball and a cover which is massive. Ball does not fit. I’m returning and going with a better brand. I’m not waiting another week for the correct cover. Very disappointed.

I wanted to like it but just didn’t find it comfortable. I gave it a month and was actually just going to return it but realized it’s now outside the return window. So writing a review instead.Setup took maybe 15 minutes. It was a little hard to wiggle the inflatable part inside the cover but not a big deal. One thing that became apparent at that point that if you want to have it inflated not too hard then the cover would not fully stretch and will be wrinkly, and hence the wrinkles and seams would dig into your skin when you sit.So to keep it less wrinkly I had to inflate it more than I’d prefer and it lost some of the bounce that I was looking for in this type of chair.The main point of uncomfort for me was that it is not actually a sphere. Instead it’s sort of pumpkin-shaped. And because of that if I try to sit in the middle of the “top” it’s too wide for my legs to go straight down at the knee. I end up sitting just slightly off center and given the shape of it I slide off of it slowly throughout the day and have to readjust every other minute. I’m 5.8, so it’s not that I have short legs.Looking at the bright side - it’s so uncomfortable I took to standing at my desk instead of sitting 😄It looks great and I like that it has a fabric cover. And I think the quality is also good.

Overall seems to be good and was pretty easy to put together. However, I ordered the Barley cover but received the Anthracite cover. Which isn't even an option above.