SIHOO M57 Vs M90 Office Chair

if you are looking for a comparison review of SIHOO M57 vs M90, this article is for you. Don’t go anywhere. Keep reading.

For me as well as for our office workers, we spend a significant amount of time sitting at a desk every day. Our sitting job for work must need a comfortable and supportive office chair is essential.

So, together with ordering online other office chairs, we decided to buy alongside to try out and compare two popular options from SIHOO: the M57 and M90D.

We unboxed and used both chairs for several weeks, testing their features and assessing their comfort and ergonomics to check which works best for us.

In this review, we write first-hand experience providing a perspective on both chairs. After usage, our all employees agreed to say both are able to provide adequate lumbar support, but we did notice some key differences between the two.

The M57 had a more basic design but was able to accurately curve to our spine. However, taller individuals may not be fully supported by this chair. On the other hand, the M90D offered a higher level of adjustability and adaptive lumbar support, making it a comfortable option for long periods of sitting.

In addition to our personal experiences, we also compared our findings with expert reviews and buyer feedback. By sharing both perspectives, we hope to provide a comprehensive overview of the strengths and weaknesses of each chair and help potential buyers make an informed decision.

Key Specifications Of SIHOO M57 Vs M90

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Sold To:4000+ Customers700+ Customers
Buyer Satisfaction Ratings88%80%
5 Star Ratings63%50%
Bad Review6%5%
Chair Size‎43 x 61 x 110 cm‎65.99 x 65 x 119.99 cm
Chair Weight18.9 Kilograms20.44 Kilograms
Chair MaterialAluminum Alloy+Nylon+MeshAluminum Alloy+Nylon+Mesh
Max User Height185 cm190 cm
Seat Width51 cm50.5 cm
Overall Chair Height107-123 cm117-127.5 cm
Armrest Width66 cm65.5 cm
Seat Height From Floor46-55 cm43-55 cm
Seat Depth46 cm47 cm
Seating Cushion Width8 cm8 cm
Overall Weight Capacity150 Kg130-150 Kg
Warranty30 Days Full Refund Policy30 Days Full Refund Policy
Deal of The Day (UK)View Low Price OfferView Low Price Offer
Current PriceSIHOO M18 PriceSIHOO M90 Price
United StatesLow Price OfferLow Price Offer
GermanyLow Price OfferLow Price Offer
AustraliaLow Price OfferLow Price Offer
CanadaLow Price OfferLow Price Offer
FranceLow Price OfferLow Price Offer
ItalyLow Price OfferLow Price Offer
SpainLow Price OfferLow Price Offer
SwedenLow Price OfferLow Price Offer
NetherlandLow Price OfferLow Price Offer

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See the picture of SIHOO M57 purchased package arrival below:

view of sihoo m57 unboxing purchased package arrival at home

SIHOO M57 Vs M90: Setup And Assembly Is Not Tough

The SIHOO M57 and M90 have some observable variations when it comes to setup and assembly, as we discovered during the process. See the picture of SIHOO M90 purchased package arrival below:

view of sihoo m90 unboxing purchased package arrival at home

The SIHOO M57 was the first to require assembly, and it was simple but time-consuming, requiring around 30-45 minutes to finish. It took an additional 10 minutes to construct the chair’s five-star base and wheels since the legs must be fastened into position.

view of m57 office chair bolts nuts screws after unboxing package

The SIHOO M90D, on the other hand, requires a longer installation time due to its more thorough setup.

view of sihoo m90 setup and assembly

All the bolts required to build the chair were included, along with a thorough instruction booklet. In order to prevent your hands from getting any oil from the gas cylinder on them, SIHOO also provided a pair of white gloves for you to use while assembling the chair.

view of sihoo m57 setup and assembly

We started assembling the piece by screwing the five casters into the metal base and then placing the gas cylinder into the center hole.

While the setup in M57 was simple, it can be a hassle and the unadorned design might not be appealing to those looking for a more fashionable office chair.

M90, however, required additional fastening nuts and bolts. All that’s left to do to complete the SIHOO M90D’s assembly is to slide the headrest into the opening at the rear of the backrest.

view of m90 office chair bolts nuts screws after unboxing package

SIHOO M57 Vs M90: Design And Features Are Better

The M57 was the first chair we’ll look at. It has a straightforward and minimalist design, a black mesh backrest, and a chrome base and wheels. The SIHOO M90D, in comparison, has a more distinctive design with a hard plastic back and a patterned mesh backrest. On the frame of the chair, there is a little red SIHOO logo, and the backplate has grey accents on either side.

view of sihoo m57 design and features

Further, the SIHOO M57 mesh backrest has two-way lumbar support integrated right into the back and a subtle design for extra elegance. The chair also has 3D armrests that can glide backward and forwards and swivel left and right, albeit they are not especially comfortable. A single lever is used to raise and lower the chair, and a locking mechanism locks the backrest’s position in place.

view of sihoo m90 design and features

The silver metal base of the M90 chair with movable armrests contains a lever that you may use to lock the chair’s height in place. To make it easier or harder to lean back in the chair, there is a knob in the centre that may be tightened or loosened. The silver-finished metal base of the chair contrasts well with the black seat cushion, armrests, and backrest.

SIHOO M57 Vs M90: In use Performance Satisfactory

After testing them for several weeks, we compared their performance. Both provide distinctive experiences.

With the turn of a wheel, the M57’s straightforward yet efficient lumbar support mechanism may be customized. The user is pleasantly kept upright even if it may not be as sophisticated as those available in more expensive ones.

The SIHOO M90D, in comparison, offers a more sophisticated adaptable lumbar support system that can be altered to properly fit the user’s back. The chair also includes a supportive yet firm seat cushion that is pleasant to sit on for extended periods of time. In the case of the SIHOO M57, the backrest is held firmly in position by the locking mechanism, which is likewise simple to operate.

The armrests of the M90 are also tiltable and adjustable for users who want a broader resting posture. Additionally, the M90D includes sturdy casters that make it simple to move around on various types of flooring.

However, because the m57 is made for average-height people, taller users might find the chair to be a little uncomfortable but they go with the M90 with a maximum height of 190 cm.

SIHOO M57 Vs M90: Buyer Reviews


The SIHOO M57 chair has received high praise from UK buyers for its exceptional comfort and value for money. One satisfied customer, who had previously owned a worn-out chair, found the M57 to be an excellent replacement, particularly praising the adjustable armrests and ease of assembly. Another customer found the chair’s support team to be very helpful when they required a replacement part, which was quickly shipped to them. Additionally, customers have complimented the chair’s mesh design, which provides exceptional comfort for extended periods of sitting. Despite some negative reviews regarding the M57’s not suitability for taller users, the overall consensus among UK buyers is that the SIHOO M57 is an excellent office/ergonomic chair at an unbeatable price point.


SIHOO M90 is a highly regarded office chair among UK buyers, as it provides excellent support for the lower back, promotes proper sitting posture, and has good build quality. The lumbar support feature is a particular favorite among customers, who appreciate its benefits for comfort during long work hours. The chair’s ability to lean for more relaxed sitting is also appreciated by many. Despite some minor quibbles, such as the firmness of the sponge cushion, buyers are generally pleased with the M90’s comfort and features. Furthermore, the excellent customer service from SIHOO, which includes prompt replacement of faulty components, has also received positive feedback from customers. Overall, the SIHOO M90 is a great value-for-money office chair with many desirable features that buyers in the UK appreciate.


This is a conversation thread on Reddit where someone is asking for advice on whether to purchase the SIHOO M57 or M90 office chair. They mention that they have back pain and want to know if anyone has experience with these chairs, especially the M90 which is around £200 more but comes with dynamic lumbar support and a height-adjustable backrest. One user recommends the M90 and another confirms that they ended up getting it and are happy with it, but note that it is not the most comfortable chair and recommend getting extra cushioning for the armrests. The thread ends with the original poster asking for more information about the armrests, and the user who purchased the M90 responding that they have a hard plastic base with a thin rubber or foam topping.

SIHOO M57 Vs M90: Which One To Choose?

The SIHOO M57 is a fantastic option if you want strong lumbar support. It excels at offering two-way lumbar support that precisely contours to your spine, making it appropriate for people with back issues.

Additionally, the M57’s black and chrome visual design is ideal if you want something with a subtle and straightforward design for your home office. The M57, however, might not be the best option for you if you’re taller and heavier than the typical person or desire a premium feeling chair.

The SIHOO M90D, on the other hand, is a more reasonably priced choice that offers an ergonomic office chair with a headrest built in, which is hard to find at this price range. It’s perfect for people with back issues or those who spend a lot of time sitting at their desks. Long periods of sitting are made pleasant by its adaptive lumbar support, which automatically adjusts to give support for the lumbar region of your back.

However, if you’re picky about your office furniture matching and prefer to buy from businesses that also produce other office supplies in addition to chairs, you might want to take into account other brands like Vari, FlexiSpot, or Branch Furniture.

In conclusion, the SIHOO M57 is a decent option if you prioritize lumbar support and a basic design, while the SIHOO M90D is an excellent alternative if you want a reasonably priced ergonomic office chair with a headrest and adaptable lumbar support.

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gareth thomas author
Gareth Thomas

Gareth Thomas is a professional writer with over 10 years of experience in the industry. He is a guest contributor to Finexo Enterprise UK where he writes reviews and best buys for a range of products. His work is based on publications, extensive research, and hands-on experience, making it credible and trustworthy. He has a keen eye for detail and is always up-to-date with the latest trends in his field. Gareth is known for his clear and concise journalism writing style, making his content easy to understand and engaging for readers. He is dedicated to providing accurate and unbiased information to help consumers make informed decisions.

henry expert author

Henry is uniquely qualified at evaluating the performance of office chairs. Not only does he have 10+ years of experience in manufacturing them, but he also has a deep understanding of ergonomics principles that inform the design and production of chairs to ensure comfort, safety, and cost efficiency.

After so many requests he agrees to write for Finexo enterprise UK. Thanks for giving us the time.

With Henry's expertise, offices can rest assured that they are providing their employees with optimal seating solutions no matter the budget.


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