Summary:I’ve owned since Feb2021, chair is still in great shape. Only qualms that I have with it are related to the armrests. Firstly they are not full 3D ones, however you can order a pair of full 3D armrest from their site and mod them on. I did this after a month of owning in order to have the ability to rotate them side-to-side as well as up/down and forward/back. The default armrests can only go up/down and forward/back.In addition either the armrests/bolt line up for them was not totally even, which has no effect on comfort but for a $400 product you would think the craftsmanship would better. I think on the base of the chair/bottom where the holes to bolt the armrests in are ever-so-slightly not aligned so one armrest is touching the back of the chair while the other one is not quite touching it yet. Not a huge issue for me as it’s only noticeable when you are looking for it.Armrest Comfort:Also the armrests themselves are not super comfortable for long sessions, especially if you wfh in the chair as well. Can fix that with some cheap armrest padding that you can velcro on which I use, this isn’t the most elegant looking solution but it really helps with comfort. If you are only using the chair for like 3-5 hours a day you probably won’t need to worry about that though.Headrest:Headrest is fully removable but you will have no reason to remove it as there is no head support if you don’t use it. It is very comfortable though and can be adjusted readily, will work for very tall people as well I’m 6’2 and still have a lot of room to adjust it higher if I needed.Casters:Casters are high quality. They still roll very well after a year of ownership.Lumbar support: is adjustable and fulfills it’s purpose. Don’t think it’s removable but it’s probably one of the reasons you’re considering a chair like this in the first place.Overall I’d give it a 4.5/5 for the armrest issues. And moreso -0.5 point because they weren’t aligned evenly. The ability to upgrade the armrests was very nice and they had great customer support in assisting with that. And regardless it’s still a very comfy chair that has held up very well over a year of ownership. All the issues I had were present at the start and no additional problems occurred over a year of ownership. Would recommend. [...]