Unfortunately, the chair we got was trash. What I mean is, it was totally defective. This may be an exception. Some part (I suspect the gas unit) doesn’t work and you can lift the chair to adjust its height but it doesn’t hold when sit back down. The gas goes out and you and the seat slide right back down. I was willing to try replacement parts but now got an email saying they are delayed till the end of the month. So buy at your own risk. What a disappointment.