Sitting on one right now, purchased it used a few years ago. Works fine, occasionally have to re-inflate it and pairing it with a cushion has helped. I disclai

Sitting on one right now, purchased it used a few years ago. Works fine, occasionally have to re-inflate it and pairing it with a cushion has helped. I disclaim things a bit as I weigh a bit less than the average american male, but it looks like they now sell a larger version of the stool (ergo extra) which might be in response to earlier durability issues.