SIDIZ T80 Home Office Desk Chair : German Ultimate Sync Mechanism for Precise Adjustment, Adjustbale Headrest, Fresh Mesh Back, Lumbar Support, 3-Way Adjustable Armrests, Seat Slide/Slope

I've been using Sidiz T80 for two months, and now I can share some of pros and cons I found.First when I got the chair, it felt really uncomfortable for a week. Then, I realized that it's because I wasn't seating correctly. I was seating more like "C" shape when it supposed to be like "S" shape. Then, I felt significantly less back pain after I correct my posture. I felt like T80 designed to be support your back really well seating with right posture.Second, it's very easy to assemble. It took me less than 5 minutes to unbox, and assemble the chair. Also, I really liked its ease of use. Adjusting tilt angles, firmness of the back support and height are very easy to adjust and it's intuitive.It also comes with better materials overall than T50. T80 is significantly heavier then T50. T50 had more plastic parts and flimsy parts. T80 has better mesh back, cushion fabric and other parts than T50.On the other hand, there are a few things that I wish T80 could do better. I wish T80 offered a free tilt adjustment, instead of only four tilt pre-adjusted angles. I wish I could lock at any tilt angle I want. Also, I wish the T80's lumbar support can adjust the depth, like T50. It could've made T80 a perfect chair for me if I could adjust the lumbar support a bit forward (T50 offers it, but poorly).Also, I liked T50's seat cushion over T80. I'm not sure if it's just my T80, but the cushion is too thin and too firm. So I feel uncomfortable when seating over a longer period of time, which I didn't experience with T50.Overall, I would recommend T80 for home/office environment. ("maybe" for gaming)Pros- Well made, premium feel like office chair.- back and lumbar support is firm and it supports your back really well.- Easy to assemble- Ease of use.Cons- Price. Although this chair feels like premium, it's questionable when T50 is only half of its price.- Offers tilt adjustment, but only four pre-adjusted tilt angles.- Cushion is too firm and flat.

This is more of a preview than a review after a single day, but I will update it over time. The chair’s packaging is rated at 9/10. Since it is nearly fully assembled aside from the headrest and the base (casters), the protection is OK even though it went thru a few tumbles during transport.While the overall chair production quality is high, as others noted, there are more than expected plastic components used in the design in this price range. My Herman-Miller Embody and Arron chairs did not create this impression. We will see how it holds up over time due to regular use.The biggest issue for me at this point is the chair is slightly short even at its highest setting from the ground. I’m 6’1” and 220lbs. The included 2.5” casters are fairly low grade, not what I had expected to see on a $1K task chair. So I had ordered a set of replacement 3” casters (Office Chair Wheels Gift Set of 5 - Protect All Your Floors - 3'' Heavy Duty Replacement Rollerblade Rubber Chair Casters - Best Protection for Your Hardwood Floors - Silver https://www.amazon.com/dp/B07H7VB2WT/ref=cm_sw_r_cp_api_i_TJe3CbQ7BQ32F“ that I hope will remedy the height issue and offer better rolling performance. These will arrive tomorrow, May 16, 2019 and I will post a comparison picture of the OEM and the new casters. I’m not pleased having to spend more money on top of the already considerable purchase price but if it yields the expected benefits I will be happy with the overall ergonomics assuming the rest of the chair holds up over time.The online manual does not mention one minor task involving the mounting or the headrest assembly. The chair comes with a hex key and two bolts to mount it, however, it is not mentioned that a 2nd set of shorter bolts are already installed at the factory for customers who do not want to install the headrest. So I spent some time figuring out what’s missing and why the bolts don’t fit (as they were blocked by the original screws). Anyway, problem solved.The plastic frame of the top of the backside, and the mounted headrest are constructed very impressively but do not provide a solid feel. There is a fair amount of flex when held. Same goes for the adjustable armrests, although it’s not as extensive there due to the steel mount.The main base mechanism is far more sturdier and comparable to other similar priced models in the $1-$1.5K price range. The padded seating pad is adequate but could use a bit thicker foam. Same goes for the PU covered armrests. The adjustment mechanisms are solid and work well.Finally, the Marvel themed Captain America treatment is overpriced in my opinion. I would not choose this option again because the marketing photos shown on the website as well as here on the Amazon product page are professionally lit studio compositions. In person, the lumbar panel and mesh Shield logos are much more subdued on appearance to the point where they are nearly invisible unless you know exactly what to look for. I guess this is a matter of preference and some may call it understated elegance but the Marvel color palette is anything but understated, so I’m surprised they could get away with it. The $200+ price difference seems exorbitant for what you get, IMHO.I have posted two questions for the seller prior to writing this review: hopefully, they will respond promptly.

Looks great. Love the adjustments options. Wish you could adjust the tension of the spring tilt more. It doesnt get stiff enough with out full locking to upright losition. Seat could use more padding if you sit for 8+hours a day.

First things first, I did not keep this chair for reasons I will detail below. That being said, I can easily recommend this chair for most people who are looking for a robust, well made ergonomic chair that's under $1,000.When I received the chair, it arrived in pristine condition. It had custom cut foam to fit around parts of the chair and ample padding throughout. It wasn't quite the unboxing experience the SecretLab Omega D.va Edition (surprisingly well packaged) was but far better than the shockingly poor Vertagear SL4000. Assembly was by far the easiest of any chair I've purchased. Since the arms come attached to the frame of the chair, the only real assembly is if you opt to install the headrest. Otherwise, the gas lift simply sits inside the 5 star base and the chair lowered onto the gas lift piston. Insert casters. Done in minutes.The build quality of the chair, despite being mostly plastic, is very high. There is heft to the chair and it feels rigid, with no weird flex or give in random spots. The finish and feel very similar to higher end chairs like the Steelcase Gesture. The plastics, anyway. The fabric isn't quite up there. The mesh back is thick and the seat fabric felt like a mid-rub blend of poly. The five star base felt very durable despite being plastic. The casters were also plastic but they were the smoothest ones I've felt yet. They also performed fairly well on high pile carpet.In terms of ergonomics, there are a ton of adjustments that can be made to tailor to your preferences. Without going in depth, I've found that it hit basically everything I looked for with the exception of being able to lock a seat/back tilt angle. This is something that's usually reserved to only the most adjustable ergonomic chairs out there so it didn't come as a surprise.Comfort wise, it was mixed. The chair was supportive and comfortable for short stays but the seat didn't agree with my flat butt over extended sessions. On the flip side, my girlfriend found it comfortable and had she not wanted a pink gamer chair (the SecretLab I mentioned), I would have kept the T80 and have her use it instead. Oh well.Ultimately, the reason why I ended up returning the chair was because there were a few small issues that I could not resolve. The biggest issue was the size. While it is a larger chair than most, the headrest was too short and only supported my neck and lower head. Being just shy of 6'1", I suspected that I might run into this issue but hoped the headrest would adjust high enough. The lumbar support also did not adjust high enough and only managed to reach my upper hip. Lastly, there was a very small amount of a play in the seat that bothered me. A crazy nitpick for many I'm sure, but I shift in my seat from time to time and every once in a while, I would feel a click or a slight wobble. If the headrest and lumbar were better positioned for a taller person, I would have gotten over the seat but it was not meant to be.At the end of the day, I think the majority of buyers would be thrilled to own it. The T80 is stylish and holds its own against the likes of the Aeron (supportive, but not as comfortable) and Gesture (not as supportive but comfy) at a lower price. The customer support was also fantastic. I just wish it were taller, since I can't do anything about my height. :P

The seat cushion of the chair is very firm and will be uncomfortable to sit in for anything other than short periods of time. The marvel version also replaces the seat cushion fabric with pleather so if you get hot, get the normal version.The price to feature is solid, but I regret not just going all the way and getting a high end chair.