I'm very disappointed in this chair.  I purchased it in April 2024 and paid to have it professionally assembled.  Fast forward to now, just 6 months later (October 2024) and every time I sit in the chair, it slowly starts to lose its height.  I purchased it to use at my job, it does not work for me in the lowest position.  Thankfully, I purchased the extended warranty when it was offered at the time of purchase.  I just hope the process to have my chair serviced/replaced is not too much of an inconvenience for me.