Disclaimer: I just got this chair and put it together. I wanted to do this while it was still fresh on my mind, so please forgive me if this is wordy. I do not usually leave reviews, but this seemed to warrant one. Assembly: 1/5 I bought this chair because I have back problems and needed something nice for working from home. Attempting to assemble this thing was an absolute nightmare which caused me physical pain. There are a couple main reasons for this. First and foremost is that the t-nuts your bolts screw into are not properly placed and not attempt has been made to compensate for the uneven surfaces causing the issue. They are skewed/inserted into the pieces of the chair at odd angles, with the direction depending on the location of the t-nut. For instance, one of the t-nuts on the bottom of the seat was inserted at an angle that caused the bolt to point towards the outside of the seat, resulting in the bolt not being able to be tightened to be flush with the seat arm piece it was attaching; a different t-nut in that same piece was angled towards the front. All of the t-nuts, every single one, has this issue to some extent, and it's not just the angle at which you screw in the bolt, it is the placement of the t-nuts in regards to one another (causing alignment issues when trying to build it). Secondly, the fabric covering the seat bottom is misaligned, causing interference when attempting to get the bolts threaded onto the t-nuts. Both of these issues combined result in you being forced to attempt multiple tries to align EACH BOLT before finding the "proper" alignment and finally being able to complete the build. What should have taken me 15 minutes took almost two hours. I build computers for a hobby and am a tinkerer by nature, so building things is something I do often, but this chair... if I had known what a horror it would be after assembling it, I never would have bought it. Because of the issues getting the bolts properly seated and tightened, I am scared for my safety in this thing. That is to say nothing of the fact that I've hurt my back, knee, and ankle, trying to flip this thing around and crouching over it in odd positions to get it assembled alone. In a word, absurd, this entire experience assembling this chair has been utterly absurd. Avoid this chair unless you have help, and if you are buying this to help alleviate back or other joint pain, don't bother with this one even if you have someone to assemble it for you. Not being able to tighten the bolts properly is a safety hazard you don't need with existing joint problems of any kind, and there are other quality issues I will go into below. If you do decide to buy this, do yourself a favor and get a friend or two to help you. Do not attempt to do this alone, no matter how tempting. Organize all of the included hardware into trays or bowls on a sturdy dining room table or something similar before you begin and do the assembly there. Do NOT tighten the bolts more than hand tight initially; because of the issues with the t-nuts not being precisely placed, there will be some awkward adjustments needed as you are constructing your chair. Inspect ALL of the t-nuts BEFORE you start building, and clear away any fabric covering the t-nuts; the fabric on the bottom of the seat is not attached to anything except along the edges, so this might be a bit tricky as it does shift. If you have joint problems, you may want to put on your support items (knee brace, ankle support, wrist support, etc) first; even with help, you will be flipping, holding at awkward angles, pulling, and pushing the pieces of this thing to get it together. I am including a photo of the seat bottom to show you what I mean by "misaligned fabric", as well as a photo of the instructions in case anyone needs them. Best of luck to you. Quality: 2/5 The item came with instructions and all the necessary parts. However, both individually and fully assembled, those parts leave something to be desired. This goes back at least in some part to the issue with the t-nuts that caused the assembly to be a fresh hell. It is not just that, though. The item arrived with little in the way of protective packing material in the box. I am surprised there was not more damage to it. The "lumbar support" on the back is too low and is uncomfortable on my back; there is no way to adjust it on the chair. The mesh on the back sits against hard plastic and will rub there, likely causing a hole over time if you actually sit back against it. The seat fabric is held on by staples - this is something anyone with pets or small children should be aware of, as this is a possible safety concern. Some of the staples on the seat I received had corners sharp enough to cut. Speaking of the seat, it's made of polyurethane foam and is not very comfortable, especially if you have lower back problems as I do. The fluffy-looking seat was one of the reasons I purchased this chair. Major let-down. To be fair, I do have back problems, so someone with a healthy spine may be just fine with it. The wheeled base seems wide and sturdy enough, but it does not hold the hydraulic mechanism in the chair at all, merely cradles it. What this realistically means is that, should you begin to tip over, the chair will come apart underneath you, and there is little to nothing you can do to avoid injury. Be very careful about how you move in this if you get it; shoddy assembly aside, your chair is literally just sitting on the wheeled base with nothing holding it there except gravity and your own weight - until something goes wrong, of course. The arms are a nice height but the right arm is approximately half an inch higher from the seat than the left, likely part of the aforementioned assembly issue. Upon closer inspection (and measuring with a tape), the seat itself is uneven, as well; this is likely due to the base itself being malformed, which I did notice when assembling. It does not sit flush with the bottom of the chair and seemed uneven to me. I had brushed off the notion, thinking there could not possibly be something structurally wrong with arguably the most vital piece of the entire chair in regards to safety, but now I guess I know for sure. TL;DR: I really wanted to love this chair, but I regret buying it. I truly thought it was higher quality because of the price - spoilers, it's not. If you are on the fence about this one and have the money, pay extra for better quality. You will be glad you did. If this chair lasts more than two years, I may update this review with a bit brighter of a response, but for now, I am thoroughly disappointed in my purchase.