Seems very sturdy. I found it comfortable straight out of the box and my kids love knocking it over and playing with it so it serves double duty. I haven’t sat on it for long periods of time, mostly just taking a quick break but I like working on my balance with it.

it is exactly how I imagined it would be and it is very comfortable

I jumped at the Open Box option and I’m glad I did. My daughter can’t sit still at all and I looked into a bunch of active sitting chairs. This one intrigued me the most. She really loves it.

Aside from it being about 1" higher than expected based on spec readings fully inflated (I have short legs, so that means I have to wear shoes/deflate just a smidgen for it to be most comfortable for me), this was the perfect solution to the age old large ball issues that arise when you are trying to make this into a semi-permanent chair for your office - it's easy to handle (more like a stool), and easier to get on/off of it as you stand/sit.

I have two of these chairs - one at my home desk and the other at work. Its better for your posture and core than any other 'fitness chair' out there.

Great seat for our therapy and sensory room!

This is exactly what I wanted but boy did I have to wait for it. After ordering I heard nothing for awhile. When I finally heard, the delivery was delayed almost a month !! All I could do was wait.

Great piece! very stable.

great!