M18 Ergonomic Office Chair, Adjustable Lumbar Support, 330 lb, Black

I’ve been using the SIHOO M18 chair daily and I’m genuinely very satisfied with it. The build quality is excellent, everything feels solid, well-designed, and properly engineered rather than flimsy like many chairs in this price range. The chair is very comfortable, especially for long sitting sessions. The lumbar support is firm and supportive without being intrusive, and the mesh back keeps good airflow. The seat base is stable and does not wobble, which gives confidence in its durability. Assembly was straightforward and all parts fitted precisely. Once assembled, the chair feels sturdy and balanced. The adjustment options allow you to find a comfortable position easily. Overall, this chair offers excellent value for money. It feels reliable, supportive, and suitable for daily use over long periods. I would definitely recommend it to anyone looking for a quality ergonomic chair without spending excessive amounts.

Working from home it is a great chair, feels supportive, back support is good too. The head rest is so nice, and how it reclines feels great, sometimes when i need a headspace break in work just leaning back feels so comfortable for 5 minutes! Gaming as well its very good too, overall I was very impressed with this purchase.

It's massively better than Songmic Office Chair Ergonomic OBN52BKUK, which I bought for the spare room (although one might expect all these things are built in the same warehouse and designed by the same people). Like that, the Sihoo is limited and a tad flimsy around the arms, but overall, unlike the Songmic, it's overall a more comfortable sitting upright experience. The rollerblade-style wheels, which I'd never seen before on a chair, are of particular note: combined with the chair being fairly light, it's very easy to move around, it's like gliding, even on carpet. Ultimately, it is a cheap office chair, you go into it not expecting the best build quality, but to its credit it has decent lumbar support (far better than the Ikea Markus it replaced, and the Songmics), and just as crucially, a semblence of a headrest with a decent range of movement, which the Songmics lacks entirely. Frankly, I've used far, far worse chairs in professional offices back in the Before Times. Build is pretty easy, and the package includes a spare of everything, and an actually useful allen key with a big grip. I'm hanging on to that for future reference. My only real negative, even at this price point, is that while the back recline options are limited to two additional fixed positions as may usually be the case in these types of chair, neither of them feel right: even the 2nd position is a too far back for my taste, especially given the seat reclines with it, so it lifts your feet off the floor and you have to reduce the height, which is awkward as both are controlled by a single, dual-function lever. Still, for £136, and knowing the mesh will inevitably be torn to shreds by the cat in a few years, as happened to the Markus—hence why I can't risk even a second-hand Aeron—I don't think you'll be disappointed. Have low expectations, it will beat them easily.

Review of Sihoo M18 Office Chair purchased from Amazon UK for £139 in May 2026. This is an excellent chair, it went together easily, no problems with missing screws or badly drilled holes. The seat is firm but it's not uncomfortable and I understand it gets softer over time.-, there's adjustable incline which can be locked in different positions. I just leave it unlocked to rock back and forth. There's also adjustable lumbar support (up or down/ in or out). I'm 5ft 11inches tall and love this Sihoo Chair, it fits perfectly and is very comfortable. Reccommended.

comfortable, easily put together, the rollerblade style wheels make it roll smoothly and the locking recline feels reassuringly solid, when set upright the back support realy helps comfortably correct my posture preventing the end of day slump back ache.

Easy to assemble. Solid quality. Comfortable to sit on. No issues so far.

I purchased this as I need an ergonomic chair for home working at a computer all day. I had developed neck pain with my previous chair and needed something that will give full back support and is high backed - I am 6'2"" tall. The chair is well made and looks great. I suspect it will be fine and comfortable for most people who need a home office chair. However, it won't help you maintain a good posture for working at a desk if you have back/neck problems. The back is quite high but is not height adjustable as you find on many other fully ergonomic chairs. The main issue is that the back rake adjustment does not allow you to position the back upright. Even when locked in the most 'upright' position, the back is slightly inclined backwards, meaning that you cannot keep contact with the back when working comfortably at a desk. Strangely, it does allow you to tilt the back a very long way back - but I can't see that anyone would ever want to do that. It is a shame you can't so the same and tilt the back forwards. The headrest was not high enough to reach anywhere near my head, even on the maximum adjustment, and it feels too 'flimsy' on its plastic frame to provide any meaningful head support. I had to return for a refund and now on the look out for a chair with a full back rake adjustment and height adjustment. Communications with the company have been excellent.

I bought this based on reviews, as consistently appeared in top 10 reviews of chairs. Had a genric computer/gamer style chair which was not that good to sit in and most reviews say go for an office type chair instead on these. Was really easy to put together. They provide all tools to fit including cloth gloves, as the washers have a little oil on to them to keep from rusting. All screws have an extra one incase you lose one. Took me 20 mins to put together. The only gripe I have is the adjustable armrests that move up and down and headrest wobble a bit, not quite a plush fit, but these don't affect you whilst in use. Was just looking for something negative to say as no product is perfect. Had the chair for 2 weeks now and all good so far.

I bought it in 7800, its very good chair in this price, quality is very good too.

VERY quick shipment. The delivery took only 4 days Instead of 12 – 21 as the delivery notification indicated. Very easy to assemble. Expect 30 minutes and you can take it easy. Mount the parts in a large place and then move the finished chair where you want it in two parts, bottom part and top, it is quite easy. The chair is quite comfortable with the nice lumber support as a plus. The slope of the backrest did not work at first, the latch had locked in on position. After some trickery, it let go and now it works. The only negative thing is that it cannot be raised any more. I’m 190+ cm and think it is in the too low even fully raised. I'll will try to find wheels that are higher, would need 5 cm extra. How it lasts over time is hard to say but the construction is robust and well made so I have good hope.

J'utilise cette chaise de bureau ergonomique depuis maintenant 1 an, et voici mon retour d'expérience : Points positifs : Facilité de montage : Le montage était rapide et simple, j'ai pu assembler la chaise en moins de 30 minutes, avec des instructions claires et un outil fourni. Confort du dossier et assise : Le dossier est respirant, ce qui est un gros plus, surtout lors de longues journées. L'assise est bien rembourrée, offrant un confort qui tient sur la durée. Support lombaire réglable : Le support lombaire ajustable est un vrai bonus. Il s'adapte bien à la courbure naturelle du dos et m'a aidé à réduire les douleurs. Accoudoirs réglables : Les accoudoirs sont réglables en hauteur, ce qui permet de bien s'aligner avec le bureau. Inclinaison ajustable : Le mécanisme d'inclinaison est fluide et permet de basculer légèrement vers l'arrière pour un moment de détente sans être trop rigide. Les roues : Très bonne qualité, aucun bruit depuis un an, la poussière ne s'incruste pas dessus Points négatifs : Assise un peu ferme pour certains : Bien que confortable pour moi, certains utilisateurs pourraient trouver l'assise un peu trop ferme pour de très longues heures d'utilisation. Taille des utilisateurs : La chaise est parfaite pour moi (1m80), mais elle pourrait ne pas convenir aux personnes plus grandes ou plus petites. Conclusion : Dans l'ensemble, c'est une excellente chaise de bureau ergonomique pour son prix, surtout si vous cherchez quelque chose de confortable avec un bon support pour les longues sessions de travail. Quelques petits points pourraient être améliorés, mais rien de rédhibitoire. Je la recommande pour ceux qui passent de longues heures à leur bureau et recherchent un soutien ergonomique.

For the price of this, you wouldn't get a better chair. It's solid and it has features that you usually only find on more premium chairs. The pros: - The wheel base is metal (even the wheel brackets themselves are metal) - The wheels are the same as what you find on roller blades. they're very good quality, very silent and smooth when moving around - The padding on the seat is thick and comfortable. I've had it for a good few months now and I work mostly from home and it didn't go out of shape - The reclining options are good. you can lock it into a reclined position or leave it open. you can then adjust the tension from underneath for how much weight / force it takes to recline - When you do recline, the back reclines more than the seat so it feels more natural. the arms are attached to the seat base so they move with the seat (not the back) - The arms can adjust up or down The cons: - There is a lumbar support on it which doesn't have much padding. luckily you can adjust it, so I have it back fully and don't notice it there. - It would be nice to have more adjustment on the arm rests. It can be put up or down, and the padding of the rests are shaped so your forearms won't slip off. The problem is that they don't turn, so when you're typing or using a mouse, the padding on the armrests don't feel too comfortable. This is why I gave it 4 stars instead of 5

组装会麻烦一点 用起来挺不错的