Ok yes, it's a $1300 chair, but I was desperate from serious lower back pain and I was willing to try anything. Perhaps it being so expensive made me think it must be THE best. Well.... I almost hate to say it but it must be. I've never been more comfortable (for long periods of time) in a chair than I am in this thing.

I'm 6'1" 275 pounds. "Big guy". And it's super roomy and supportive. I'm at my computer for sometimes 12 hours a day writing code and in my other Serta chair which in all fairness was an executive chair (this being a 'task' chair) I was literally having to go for physical therapy after long weeks of work. It was awful.

Within two weeks of having this chair I have had NO back pain. NONE! In fact I worked 12 hours in it yesterday and thought for sure I'd wake up in crazy pain this morning but instead I felt completely normal. Which is why I'm writing this review. The chair really is amazing. It sucks that the it's so expensive but looking back I don't have any regrets now that I can work as hard as I need to without suffering physical detriment after ever session.

Finally, I will say that my only two gripes about the chair is that,
1. It has one squeak that kinda drives me crazy but it's probably because I'm seriously overweight. Even so, for this kind of money I would expect it to hold an elephant without squeaking. Just sayin.
2. The optional head-rest should not cost $180. C'mon guys. The chair? I get it. It's a lot of math to figure out how to support the (body) correctly but leaning my head back to rest for a minute can't possibly be rocket science. That's a bit of a price gouge in my opinion.

Hope this helps someone considering going this route. I personally had anxiety about buying a chair this expensive without ever having sat in one but desperation won the day and I went for it. Extremely pleasantly surprised and satisfied.

Best of luck

Overall this is the best chair I have used. It provided better support for long computer sessions then any chair I have used. No more back pain! :) It came fully assembled just had to take it out of the box (Love that). Only taking off a star due to the high price it should cost like $600 you pay a lot for the name. Shipping was fast!

A few notes...
If you think this is a chair you can lounge in your wrong. The way its designed you end up sitting straight up. If you don't do this I have noticed some discomfort. Also spend some time to adjust all the settings. The posture fit for example took me a bit.. I thought I should have it on the max setting but I ended up being most comfortable with it almost all the way off. With all the said I have been very happy with this chair for long computer sessions 8 hours is no big deal and my back has not hurt at all. I did not realize how much my old leather Staples chair was making my back hurt till I switched to this the support for the lower back is so much better. Also this has a lot of moving parts vs. my old stationary chair, so that takes a few days to get use to the feeling of parts moving against each other. I do think they are over priced. I think it should be priced around $600 you are paying a lot for the name. However all the knock off version of this chair I have used are not even close quality and comfort. If you want one of the best chairs for long computer sessions this is it.

I have spent countless hours and months browsing for a new chair and have narrowed it down to what I see as the top in this market from the industry titans, Herman Miller and Steelcase. The Aeron, Embody, and Leap are what I and I'm sure many others see as the best of the best. However I eventually came to the conclusion that I wanted the Aeron over the others.
Why? It is the most utilitarian of any other chair. It brings a sleek, modern, industrial design while seamlessly blending both form and function. It also has the best and accessible third party additions such as the Atlas headrest (which I STRONGLY suggest you purchase as well as it is easily the best headrest on the market and incredibly made.) This chair does away with features that are, in my honest opinion not needed on a chair that yourself will use at home such as seat depth and arm width. These are ergonomic features that are great but with the three sizes you can find the perfect sized chair for your height and weight. Think of it like buying a great pair of leather shoes. If they are the correct size, they are the best fitting and most comfortable thing you own. But because of this I once again STRONGLY suggest you find a nearby seller that carries this chair and specifically the remastered edition as the chair has some size differences from its previous model. This will allow you, just like you would try on clothes, to find the right size for you in person. You could always buy this chair directly from HM or a dealer as well but purchasing through amazon is by far the best option as the delivery is so fast. I had the chair withing a few days after ordering. If I ordered through HM themselves, I would potentially have to wait weeks or even a month. You should absolutely be getting all the features on this chair regardless and since the fully kitted model is all they sell on amazon its the best way to go. At this price range you want every possible feature and adjustment they offer.
Now what should you expect if you do go through with this purchase? I will be sincere and brutally honest. It will be uncomfortable. You will most likely experience pain for the first week or two owning this chair. Now I know what you're thinking. Pain? Isn't that what you don't want? Of course but here's the deal. I would easily say 99% of people working from home or have any sort of office space in the homes at all have been sitting in fairly inexpensive chairs without the absolute best knowledge in ergonomics. Most chairs we sit in have regular padded seats or we seek comfort with big cozy armchairs or the classic large executive chair. Yea they are comfortable but they actually lack the right support for our bodies in the long run. For example, it is better we sat in firmer seats that can in turn properly support our pelvis and base of the spine. The classic padded arm chair, executive chair, or basic office chair causes us to sink more into the chair. This doesn't provide the support we need which can lead to back issues. Yes it's comfortable in the moment to veg out but it isn't great for our bodies. We aren't built to sit for extremely long periods of time so we need to have the most support we can get. When I first sat in this chair my butt hurt, it wasn't used to the firmer sit. But gradually over time it went away as my body adjusted and now it is extremely comfortable. I should add that one of the main reasons I was looking for a new chair was to fix the circulation of my legs being cut off from sitting in previous chairs. This fixed that right away.
The back support was also uncomfortable at first and took a bit longer for my body to adjust to but it has gotten much better and fixed issues I wasn't even aware of. I thought my posture wasn't terrible for the most part. I consciously sat up straight and looked for proper support where I needed it. But I was actually doing it wrong. Lumbar support is supposed to be right around or above the belt line, not below it. I , for as long as I can remember was putting the lumbar in the small of my back which of course felt more comfortable but, instead it was pushing my lower spine further inward along with causing more tilt in my pelvis. This is called anterior pelvic tilt and actually it is extremely common in people without them actually knowing it. This chair corrected this issue. Now it wasn't an extreme condition of it, but none the less I can easily see that my posture and pelvic alignment has adjusted to a more neutral position within a few weeks of using it. It corrected an ongoing and potential growing issue that I was doing to myself over years of poor seating in just a couple weeks. I attribute this to the PostureFit SL system that provides both support to the mid-back/actual proper lumbar position as well as support to the sacrum providing proper natural tilt to the pelvis. This is something I truly didn't notice or understand till after I figured out what it was doing.
The only chair I can honestly say that may do the same thing in some way is the Embody as it does provide that full on back support. But I don't thing it necessarily provides it as strongly which I think is what people actually need. The Leap doesn't have any sort of pelvic support as there is a gap between the back of the chair and the seat pan. There really is only the classic height adjustable lumbar support along with depth tension (which the PostureFit does provide). However as I finally figured out, if you don't know how to properly align your lumbar support and only put it where it "feels good", it could do more harm than good over time.
Some things to note, I love the arms on this chair and find them to be the best arms ever made. Yes they are better than the Leap's and by far and away better than the Embody's. I actually think the Embody arms are the worst designed arms of any chair, especially for a chair of that caliber. The seat recline is also something to be experienced as it is unique to Herman Miller chairs and I believe even the Aeron's is even more special.
I can honestly go on about this chair for more but the main take away is that, yes this chair is 100% worth the price just for the build quality and ergonomic prowess this thing brings let alone the massive 12 year warranty that covers everything on the chair. Herman Miller provides some of, if not the best customer service for their chairs in the business.

Having sat in a variety of "cheap" chairs during this pandemic for a home office, the biggest issue I faced was lower back pain. Both my work and my hobbies are at home on the same desk so overall sitting time could be upwards of 16 hours on extreme cases for example. This type of lifestyle usually destroys your back if you aren't sitting in a good chair; and it did for me. I couldn't wake up and sit on the chair right away without feeling uncomfortable on my lower back.

Lo and behold, I did a round of both work and gaming, which is about 16 hours; went to sleep, and was able to sit on it comfortably after waking up with surprisingly NO back pain at all. The mesh seating, while it might look cheap, relieves a lot of pressure from your tailbone. Combine that with the lumbar support, which makes sure your lower back isn't being overused as well, absolutely saves your back.

The only thing I can complain about is that the carbon edition I purchased didn't look as clean and polished as I hoped. The plastic parts looked a bit smudgy when received it. The chair was also covered with dust and other very small materials that made it look "cheap" when I opened it the first time. So you'll definitely want to expect it looking a bit scuffed when you receive it. After a round of cleaning it does actually look decent, I'll admit.

Lastly, if you're on carpet, getting the wheels to move on the chair is a bit of a pain. So you'll probably want to invest $25 to buy herman miller carpet casters and replace the wheels.

Closing notes: Objectively it does what it's supposed to - help with my back pain. The assembly was super minimal and it was able to withstand a 16 hour session with no problems. I have no choice but to give it a 5/5 for my standards. Not having back pain is godsend.

We've all been taught that lumbar support is the primary aspect that makes a chair ergonomic. My highly talented physical therapist showed me how the seat's contour, not the back, is the most important, and the Aeron is one of the few chairs with the correct seat contour which dips down a bit in the back. It's also very important for the armrests to be such that you can slide the chair really close to your desk so that you are leaning back when using a keyboard.
It's important to know that this chair has a number of options, and you may see this chair sold for far less elsewhere, this is likely due to other chairs being sold without the options, or is the previous generation of Aeron. The chair I received is the latest and has all of the options offered.
While unpacking the chair, I really wanted to hate it. While the designers of the chair did a great job, the packing consisted of a very cheap styrofoam base, which disintegrated everywhere and took half an hour to vacuum up. The rest of the chair is mummified in bubble wrap, seems like this could be optimized to maximize protection and minimize what ends up in a landfill.