M18 Ergonomic Office Chair, Adjustable Lumbar Support, 330 lb, Black | Blade Wheels, Adjustable Headrest, Breathable High-Back Mesh, Wide Cushion, 2D Armrests, Tilt Lock, All-Day Sitting Comfort

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.

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.

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.

I bought the chair just over two years ago and when I first put it together I was really happy with the quality and comfort of it and the many ways it can be adjusted to get the perfect sitting position. Since then I’ve used it every day for multiple hours spread throughout the day. It’s still going strong, isn’t showing any real signs of aging that I can see on the seat or back rest. Is still just as comfortable as ever and the roller blade wheels makes it so much easier to move on carpet which is a real bonus The only downside I’ve found is that the plastic leather Type material of the cushioned bit on the arm rests has started to split but after a minimum three messages and a couple of pictures, replacements for both armrests are being sent out under warranty and free delivery even after over two years since I purchase it. One of the easiest and best customer service experiences I’ve had and getting the replacement bits I needed was absolutely no trouble at all and has been organised with a few messages in a day Despite the arm rests wearing and starting to tear I still feel that five stars is deserved as the chair is exactly as advertised if not better and the three year warranty on parts is genuine, easy and quick to get organised and if in another few years I have to get another arm rest then that’s a price I’ll happily pay

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

Decent chair, definitely a good option if you are budget conscious. Only thing really letting it down is the fact the wood board under the padding isn't that supported by the arms or the front so you have to be careful with how you sit. Given I fidget a bit when sitting, I was shocked to hear a crack when I was moving back onto the seat. No visible damage but does make me concerned if it might fail in the near future after 3 months with it. Wheels are great, no issues on carpet. Height is perfect for most office spaces and the seat padding is comfy enough for long sessions.

I purchased this chair in 2022 whilst searching for an ergonomic office chair with skate-style wheels, as I had read at the time that this type of wheel causes less damage to carpets. Three years on, in 2025, it still looks as good as new with no issues whatsoever with any component. The comfort, durability, and appearance are all exceptional. Due to the nature of my work, I spend many hours at my desk, yet I've never experienced a sore neck or back thanks to this chair's excellent ergonomic design. Recently, I contacted Customer Services after my headrest was damaged during a house move by the removal company. Despite the 3-year warranty having just expired, they kindly offered to send me a replacement headrest free of charge, which demonstrates their amazing customer service and commitment to customer satisfaction beyond the warranty period. I would highly recommend this chair to anyone seeking a quality, long-lasting office chair with exceptional after-sales support that goes above and beyond expectations.

First when I assembled this chair (with a pro builder at my workplace) we thought there was a mistake with one part. But we looked up the specifications online and eventually figured out that it was all ok, just didn't work as we expected based on other chairs. Once it was put together, I'm happy with the chair. It's comfortable and adapts well. I wish the arms were retractable, but otherwise great. Pay extra for the wheels upgrade. The rollarblade-like wheels are fabulous!

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

Prima stoel, stevig en makkelijk in te stellen.

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.

Stuhl lässt sich sehr leicht zusammenbauen. Er ist tatsächlich sehr robust, da viel Metall verbaut ist. Bei meinen 107 Kg ist das nicht ganz unwichtig. Man sitzt sehr bequem, die Lordosenstütze ist sehr angenehm und die Wippfunktion ist mega angenehm zum Entspannen. Summa summarum bin ich sehr zufrieden und kann den Stuhl nur weiter empfehlen. Für momentan 120 Euro wird es nichts besseres geben.

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.