Gas canister doesn't last long.
This stool is fantastic--for about a month and a half, at which point despite neither exceeding or even approaching the maximum weight, and only using it briefly a few times a day at most (and some days not at all), the gas canister seemed to stop working and the seat would lower when used. So, it went from helping my knees and allowing me to use my kitchen pain-free, to causing more pain as suddenly I'm in a very, very low seat. I'm going to look for a replacement canister, but I'm overall quite disappointed in the longevity of the product.
Rating: 2 stars