SIHOO M18 Ergonomic Office Chair, High Back Mesh Desk Chair with Adjustable Headrest & Lumbar Support, 330lbs Capacity Computer Chair with 2D Armrests & Wide Cushion, Tilt Lock, for Home Office-Black

While this is not THE most comfortable chair, let's face it - if you sit for long periods, what chair IS? I bought this chair because I'm making a career change. I've returned to school and spend hours at my desk. At the age of 50, sitting for a long time with my nose pointed toward a book can be hard on the seat, back and neck. I looked at all kinds of office chairs and settled on this one, primarily because it was on sale, was in my budget and so I clicked the "Add to cart" button and hoped for the best. It was delivered, and I had to work that evening, and when I got home my 17-year-old son had assembled it. My theory on the simplicity of assembly can be deduced from that sentence above. He didn't have any extra parts left over and the chair was complete! I sat down. I leaned back. I shifted the lever that keeps the chair in an upright position and sat straight up. Okay! I can live with this. It has been almost two full months of using this chair and I have no problems. Pros: easy to assemble sufficient comfort level - adequate cushion in the seat can be leaned back or pop the lever in to stay straight up rollers on bottom headrest is adjustable affordable easy to clean arm-rests can be moved up or down height adjustment is self-explanatory - you'll figure it out the "lumbar" support is actually comfortable - it's "there" if you back up to it but if you scoot forward just a bit, you won't feel it if you don't want to sit like that Overall this seems like a chair that's going to last me for a few years, at least, and not fall apart. In the context of size, I'm not a small or extra larger person. I'm an average middle-aged woman with meat on the bones. The seat is plenty big enough. I would recommend this chair as an upgrade to the hand-me-down office chair that just isn't comfortable any longer.

I've been looking for a new chair to replace a cheap $30 chair i bought off of Amazon last year that had been killing my back and shoulders. I wanted something in the $150-$200 range and settled on the M18. Shipping was a fast 3 days with Prime and the box arrived in great condition. All parts were separately wrapped or in their own boxes. Came with all hardware and nothing was missing. Assembly took me a little longer then normal because i have rotator cuff injury in my left shoulder so that arm is mostly useless. The most difficult part for me was attaching the wheels to the base. Other then that it was simple. Once the chair was assembled i sat in it for the first time and started making my adjustments with the recline feature, armrest level along with the headrest. Next i reached around for the lumbar support knob and tried to adjust it but with my bad shoulder i decided to just get out of the seat and turn it around and adjust it with both hands. After spinning the chair a round to get at the lumbar knob i noticed a large crack in the plastic in the middle of the back of the lumbar plastic piece. I had not made any lumbar adjustments yet so i assumed this is how i received it. The lumbar support comes preinstalled to the backrest so it either was damaged before or during the shipping process. Either way it was damaged before being delivered to me. The lumbar support still functioned properly but it was still broken. I decided to contact Sihoo's customer support that came along with the installation instructions regarding the damaged lumbar piece. I received a reply the next day and after sending them some more info about my order and a couple pics they shipped me a replacement part which took a week to arrive. I swapped out the damaged part and after owning the chair for a week so far i am really happy with my purchase. Im about 5'10 180lbs. At its highest height level my feet reach the ground comfortably flat footed. The backrest fully covers my back and the headrest adjusts very well to sit on the back of my lower head/upper neck. The armrests only go up and down....not forward and back or tilt inwards. This is fine for me as they are grooved to fit your forearm while sitting at your desk/keyboard. The armrests are also a soft cushioned rubber material...not a hard plastic. The mesh of the backrest and headrest are good material and seem well made. The seat is very wide and the cushioning is firm which i prefer. Usually more firm cushioning seems to last longer and hold its form. The base of the chair is VERY sturdy and made of all metal. My chair is on carpet and holds its position very well. As far as recline goes you can set it to recline all the way back, half way or lock the chair in the upright position. You can also adjust the resistance on the reclining feature. So that being said im very happy with my purchase. It arrived with a slight flaw which the company corrected in a fast manor and was very polite in their customer support. I personally don't have a lot of experience with many office chairs and have never used a high end chair($500-$1000+) chair before to make any comparisons. All my chairs for the most part have been from local stores like Staples or Office Depot. Id recommend this over anything they carry in this price range....and i went and looked at their products before buying this chair as well.

I bought this during Prime Days and got a good deal. I am not an expert on chairs, but I've bought about six office chairs in the last decade. These are good chairs. I would buy again. Pros: - reasonable price - comfortable for both my self and my wife - seat is large, good thigh support, and soft - adjustable arm rests, lumbar supports, head rest, and tilt stiffness - nice! - somewhat easy to assemble - the screws and parts are in a blister pack with a couple extra parts Cons: - rollers do not roll as easy as some chairs Assembly notes: - as a retired tech writer, I'll give the Assembly Guide a 70% - it's all illustrations and the illustrations are not large enough - the parts labels don't always match the assembly instructions - don't forget the washers - it's hard to see in the illustrations, but most bolts use them - the casters are difficult to install into the bottom frame - use a light coat of three-in-one oil on the caster stems and they will go in easily - it is difficult to attach the chair back to the seat - put both parts on the ground and concentrate on getting one bolt in, the others will be easy to get in

I am giving 4 star because the height is not high enough for me.

One of the nuts was completely loose in the seat. I will have to fix it myself.

Der SIHOO M18 hat meine Erwartungen an einen ergonomischen Bürostuhl absolut erfüllt. Die verstellbare Kopfstütze und Lendenwirbelstütze sorgen für eine individuell anpassbare Sitzhaltung – gerade bei längeren Arbeitsphasen eine echte Entlastung für den Rücken. Die hohe Rückenlehne unterstützt die Wirbelsäule optimal, und das atmungsaktive Mesh-Material fühlt sich auch an warmen Tagen angenehm an. Alles wirkt solide verarbeitet, die Mechanik läuft ruhig und zuverlässig. Auch die Montage war unkompliziert – in unter 30 Minuten stand der Stuhl einsatzbereit. Besonders gut gefällt mir das moderne, unaufdringliche Design in Dunkelgrau. Der Stuhl passt perfekt in mein Heimbüro und bietet ein sehr gutes Sitzgefühl – selbst nach mehreren Stunden. Absolute Kaufempfehlung für alle, die viel am Schreibtisch sitzen! 💼🧘‍♂️

Great value for money. Assembly is relatively easy but can be a bit confusing. The product is sturdy and provides ample support. Cushion may feel hard initially but settles well. Way better than many other brands that I have tried and gives comfort similar to Herman Miller chairs - unsure about durability. Only issue I have is with the headrest. It was too tight to go into the slots and I had to remove the holder to fit it. It is still a bit too tight to adjust easily.

I am a person over 200 pounds. I sit for long periods for work. Since I got this chair I haven't had any back pain. I'd say my only complaint is the seat could be a little cushier but compared to other chairs I've had, this one is excellent. It was easily adjustable for lumbar support. Another nice thing is the arm rests don't seem to loosen, I end to lean on them a lot. Haven't tightened a screw in months of usage so far. Rolls well, my shoulders don't hurt or touch the outter frame of chair. Headrest is not much use to me but doesn't get in way and is adjustable.