Finding the right office chair can be overwhelming with so many options out there. That’s why I decided to put two popular choices, the SIHOO M57 and SIHOO M18, to the test. Both models are well-known for their breathable mesh design and fulfill need something light and airy. To help you make the best choice, I unboxed these chairs, used them every day for weeks, and carefully noted their strengths and weaknesses.
Let’s start with the price difference. The SIHOO M18 is more affordable, which made it an easy choice for my initial purchase. If you’re on a budget and looking for a simple, ergonomic chair that doesn’t compromise comfort, the M18 is worth considering. It has all the basics you’d expect from a good office chair but at a lower cost. After trying it out, I’d say the M18 feels like a “lite” version of the M57.
On the other hand, the SIHOO M57 is for those who want more features and don’t mind spending extra for better durability and support. It’s built to handle longer hours of use and offers enhanced adjustability, which makes it a better choice for those who value long-term comfort and customization.
Through this comparison, I want to help you save time, money, and the discomfort of buying a chair that doesn’t meet your needs. Whether you’re looking for something simple and affordable like the M18 or a feature-packed, durable option like the M57, this guide has you covered.
If you’re stuck deciding between these two chairs, keep reading. I’ll break down the features, benefits, and drawbacks of both to help you choose the right one for your workspace. After all, a good chair isn’t just an expense—it’s an investment in your health and productivity.
SIHOO M18 vs. M57: A Detailed Specs Comparison
Why you can trust Best Ergonomic Office Chairs UK: Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
| Feature | Sihoo M18 | Sihoo M57 |
|---|---|---|
| Lumbar Support | Basic, no adjustable firmness | Advanced, adjustable firmness |
| Armrest Adjustment | 2D, up and down | 3D, multi-directional (up, down, left, right, forward) |
| Breathable Comfort | Mesh backrest for cooling | Mesh backrest, but with softer material |
| Seat Cushion | Firm, needs breaking in | High-density foam for comfort |
| Overall Adjustability | Good, basic tilt and height | Excellent, with more flexibility (3D armrests, enhanced recline) |
| Price (UK) | Current Price Offer | Current Price Offer |
| Price (US) | Current Price Offer | Current Price Offer |
| Price (Germany) | Current Price Offer | Current Price Offer |
| Current Price | SIHOO M18 | SIHOO M57 |
|---|---|---|
| Australia | Low Price Offer | Low Price Offer |
| Canada | Low Price Offer | Low Price Offer |
| France | Low Price Offer | Low Price Offer |
| Italy | Low Price Offer | Low Price Offer |
| Spain | Low Price Offer | Low Price Offer |
| Sweden | Low Price Offer | Low Price Offer |
Build Quality and Comfort Comparison: SIHOO M18 vs. M57
After testing the SIHOO M57 and SIHOO M18 for several weeks, I noticed that both chairs have their own strengths when it comes to comfort and build quality.
The M18 uses a breathable mesh material that provides decent back support and keeps you cool during long sitting sessions. However, the seat cushion felt quite firm initially and took some time to soften up. If you like a slightly firmer seating surface and are on a budget, the M18 is a solid choice. Its adjustable armrests, headrest, and tilt mechanism are useful, but I did experience the tilt lock sticking occasionally, which was a minor inconvenience.
In comparison, the M57 felt more comfortable overall. Its all-mesh design is softer, and the memory foam padding along the seat edge adds extra comfort, especially for the thighs. This small detail made a big difference during longer working hours. The adjustable lumbar support and better armrest controls also make the M57 more adaptable to individual preferences.
If you’re of average height or slimmer, the M18 fits well, but I noticed the backrest and headrest shifted slightly for lighter users. Meanwhile, the M57 is better suited for those who prefer a softer feel and need more customization options for long-term use.
Both chairs have their pros and cons, but from my personal experience, the M57 feels like the more refined option, especially if you value extra comfort and better adjustability. However, if you’re looking for something affordable that still gets the job done, the M18 is a great alternative.
Customization: SIHOO M18 vs. M57
After testing the SIHOO M18 and M57, I noticed some key differences in their customization features.
Seat Height Adjustment
Both chairs offer good height adjustments, but the ranges are slightly different. The M18 adjusts between 18 and 21 inches, which worked well for me at 5’8″. It’s a comfortable option for users between 5’3″ and 5’10”, though taller users might feel restricted. In comparison, the M57 offers a slightly wider range, from 18.5 to 21.5 inches, making it more suitable for people up to 6’1″. However, if you’re taller than six feet, neither chair may provide the ideal height.
Seat Size and Comfort
The M18 has a 20 x 20-inch seat, which feels spacious enough for most users but can feel a bit scratchy due to the fabric. The M57, with its larger 60 x 64-inch seat, offers more space and comfort, especially for broader users.
Lumbar Support and Backrest
For lumbar support, the M57 is a clear winner. Its depth-adjustable lumbar support made a big difference for me, reducing back discomfort during long work sessions. The headrest and backrest on the M57 also feel sturdier and more reliable compared to the M18, where the backrest sometimes shifted even with the tilt lock engaged. The M18’s headrest felt less dependable, and I’d recommend removing it altogether if it becomes bothersome.
The M57 also supports up to 330 pounds, making it a better option for heavier users, while the M18 has a weight capacity of 230 pounds.
Armrest Adjustability
The M57 stands out with its 3D armrests, which can be adjusted in multiple directions—up, down, left, right, and back and forth. This flexibility allowed me to find a comfortable position during long hours of work. The M18, with its simpler 2D armrests, felt less adaptable but may suffice if you don’t need extensive customization.
For better lumbar support, backrest stability, and adjustable armrests, the SIHOO M57 is the superior choice. However, if you’re looking for a budget-friendly option with basic adjustability, the M18 is still a good pick.
Conclusion: SIHOO M18 vs. M57
After testing both the SIHOO M18 and M57, I found that each chair has its strengths depending on your needs and budget.
The M18 offers a breathable mesh back and a fabric seat, making it a great affordable option for people between 5’3″ and 5’10”. Its sturdy base and basic features are ideal for those seeking a budget-friendly ergonomic chair.
The M57, on the other hand, stands out with its all-mesh design, better build quality, and wider height range, making it more suitable for taller or broader users. The high-density foam seat, adjustable lumbar support, and 3D armrests provide added comfort and customization, which I found especially useful during long work hours.
If you value advanced lumbar support, fully customizable armrests, and overall adjustability, the M57 is worth the extra cost. However, if staying cool and comfortable on a budget is your priority, the M18 is a solid choice.
Both chairs are excellent for improving workstation comfort and reducing pain. Your decision will ultimately depend on your specific ergonomic needs and budget.
David Ergonomic Expert
David Kirtley is a seasoned ergonomic expert and author with years of experience helping individuals create healthier, more productive workspaces. As a contributor to leading publications, David shares practical advice on office ergonomics, furniture selection, and workplace well-being. His insights empower readers to work comfortably and efficiently every day.
Hello, We team the ergonomic expert at Best Ergonomic Office Chairs UK. With a passion for workplace wellness and comfort, We have dedicated years of research and experience to become a leading authority in the ergonomic furniture industry. Our mission is to help you find the perfect ergonomic office chair that promotes better posture, reduces discomfort, and boosts productivity. Trust my in-depth expertise and reliable recommendations to create a healthier and more productive workspace for you.
Anthony
Anthony is a trusted ergonomic expert with extensive experience in the field of office chairs and workplace wellness. As a dedicated advocate for comfortable and productive workspaces, he has spent years conducting in-depth expert reviews and hands-on testing of various ergonomic office chairs. Anthony's expertise and authority in the industry make him a reliable source of information for those seeking the best seating solutions.
With a passion for helping individuals make informed decisions, Anthony's tried and tested evaluations provide valuable insights into the design, comfort, and performance of office chairs. Trustworthy and knowledgeable, he is committed to empowering users with the knowledge needed to create healthier and more ergonomic work environments.
Gareth Thomas
Meet Gareth Thomas, your go-to expert on all things related to ergonomic office chairs at Best Ergonomic Office Chair. With a passion for workplace wellness, Gareth holds extensive expertise in evaluating and recommending top-notch seating solutions. As a trusted authority in the field, his in-depth testing and unbiased reviews help users make informed decisions for comfortable and productive workspaces. With years of experience, Gareth's mission is to ensure you find the perfect ergonomic chair tailored to your needs, backed by his reliable insights. Trust Gareth Thomas to guide you towards the best ergonomic office chair, supporting your health and productivity journey.
Henry
Meet Henry James, an esteemed authority in the realm of ergonomic office chairs. With a wealth of expertise and experience, Henry has become a trusted source for in-depth expert reviews and recommendations. Having tried and tested numerous chairs, his insights are valuable to anyone seeking the perfect ergonomic solution for their workspace. Renowned for his commitment to accuracy and trustworthiness, Henry's reviews provide unparalleled guidance to make well-informed decisions. Whether you're a professional or an individual, trust Henry James to lead you towards the best ergonomic office chair, ensuring optimal comfort and productivity in your daily work life.