Sihoo M57 vs Doro S100: My Candid Take After 2 years of Use

Last Updated on October 15, 2025 by Cassie Moorhead

If you’re comparing Sihoo M57 vs Doro S100, both are top picks for anyone who spends long hours working at a desk. The M57 feels classic and firm, while the Doro S100 adds more motion and lumbar flexibility for comfort that moves with you. After using both, I found the M57 perfect for focused work and the Doro better for all-day sitting comfort — especially in home offices where flexibility matters most. If you’re looking for the right ergonomic chair for your workspace, this comparison will help you choose with confidence.

Sihoo M57 Review

If you’re looking for a reliable ergonomic chair that doesn’t break the bank, the Sihoo M57 is one of the smartest buys in its price range. It gives you the comfort of a high-end mesh chair with the flexibility of full ergonomic adjustments. After using it daily for several months, I’ve found it to be a solid performer—comfortable, breathable, and sturdy enough for long work sessions. For anyone setting up a home office or gaming space, this chair hits a great balance between design and support.

To buy this product, Click here.

What I Like

• Comfort-focused design:
  The S-shaped backrest really follows your spine. It keeps my posture straight even after hours of sitting. The adjustable lumbar support makes a noticeable difference for lower back comfort, especially during long editing or writing sessions.
  
• Breathable mesh seat:
  Unlike chairs with thick cushions that trap heat, the Sihoo M57’s breathable mesh keeps me cool throughout the day. In warm weather, this feature alone makes it worth choosing over leather or foam chairs.
  
• Strong build and quiet casters:
  I was surprised by how sturdy the aluminum base feels. The chair rolls quietly, which is great when moving between a standing desk and sitting setup. It also has BIFMA and SGS certification, which adds peace of mind about safety and durability.
  

What Could Be Better

• Armrest comfort:
  The 3D armrests are versatile, but I wish they had softer padding. After long gaming sessions, my elbows feel the hard plastic more than I’d like.
  
• Recline angle:
  The recline range is good but could go slightly further back for a more relaxed position. A few more degrees would make a big difference when taking quick breaks.
  
• Assembly experience:
  While not difficult, assembling the M57 took some time. The instructions could be clearer, especially for first-time buyers.
  

Is the Sihoo M57 Good?

Yes, the Sihoo M57 is a great ergonomic chair for its price. It offers full-body support and premium features you’d expect from models that cost twice as much. I’ve used it both for office work and light gaming, and it’s held up very well. The breathable mesh makes it ideal for warmer climates or anyone who spends long hours at a desk.

In the U.S., it’s also widely available through Amazon and the Sihoo official store, making returns or warranty claims straightforward. With a 3-year warranty, it’s a dependable mid-range chair that feels made to last.

Sihoo M57 Overview

Features	Details
Backrest	S-shaped ergonomic design that supports the spine
Lumbar Support	Adjustable for height and depth
Seat Material	Breathable double-layer mesh for ventilation
Armrests	3D adjustable (up/down, forward/backward, side-to-side)
Headrest	Adjustable height and tilt angle
Recline Range	90° to 126°, with lock and tension control
Weight Capacity	Up to 330 lbs (BIFMA & SGS certified)
Base Material	Reinforced aluminum alloy
Casters	Smooth and silent-rolling wheels
Warranty	3 years (via Sihoo or authorized U.S. retailers)
Retail Availability	Amazon, Walmart, Best Buy, Sihoo Official Store

Recommendation

If you want an ergonomic office chair that feels premium without the premium price, the Sihoo M57 is worth considering. It’s best for:

• Remote workers or gamers who sit for long hours.
  
• Home office setups needing a clean, modern look.
  
• Anyone who values breathable comfort and strong lumbar support.
  

However, if you prefer softer armrests or a deeper recline for relaxation, you might want to explore higher-end models like the Herman Miller Aeron or the Sihoo Doro S100.

Overall, the Sihoo M57 offers excellent value for everyday comfort, durable design, and ergonomic flexibility. It’s not perfect, but it’s dependable—just what most of us need for long hours of focus and productivity.

To buy this product, Click here.

Sihoo Doro S100 Review

The Sihoo Doro S100 is one of those ergonomic office chairs that immediately feels different the moment you sit in it. Its dual dynamic lumbar support really stands out — it moves with your body instead of pushing against it. After using it for several weeks while working from home, I can say it’s one of the most adaptive and comfortable chairs I’ve tried under $400. It’s well-built, easy to adjust, and designed for people who spend long hours at a desk.

If you’re searching for a chair that balances comfort, adjustability, and modern design, the Doro S100 deserves your attention.

To buy this product, Click here.

What I Like

• Adaptive lumbar support that actually works:
  The dual dynamic lumbar system impressed me the most. It automatically adjusts to my lower back whenever I lean, stretch, or change posture. I don’t feel the stiffness that some static lumbar systems have. It’s a real game changer for long sitting sessions.
  
• Excellent breathability and seat comfort:
  The all-mesh design keeps me cool throughout the day, even when my home office gets warm. The waterfall seat edge adds extra comfort for my thighs and helps with blood circulation — something I notice after hours of typing.
  
• Smooth recline and fine-tuned adjustments:
  I like that it reclines up to 135°, which gives enough flexibility to relax between tasks. The 4D armrests are easy to tweak for typing or reading, and the adjustable seat depth helps fit my height comfortably

What Could Be Better

• Lumbar fit for thinner users:
  A few people, and I noticed this slightly myself, may find the gap between the dual lumbar plates a bit wide. For slimmer builds, the back support could feel uneven until you get the right position.
  
• Material quality feels mid-range:
  While sturdy, the chair doesn’t feel as premium as higher-end models like Steelcase or Herman Miller. Some plastic parts could use a smoother finish.
  
• Assembly could be simpler:
  The setup took me a bit longer than expected. Clearer instructions or better labeling of parts would make the process smoother for first-time buyers.
  

Is the Sihoo Doro S100 Good?

Yes — the Sihoo Doro S100 is a very good ergonomic chair, especially for the price. Its dual dynamic lumbar system makes it stand out from many competitors. I’ve used it for both work and gaming, and it supports my back comfortably through long hours. The adjustable seat depth, independent backrest, and 4D armrests help it adapt easily to different body types.

For U.S. buyers, it’s easy to find through Amazon, Walmart, and Sihoo’s official website, with fast shipping and a reliable warranty. It’s also BIFMA and SGS certified, meaning it’s tested for safety and durability — a reassuring detail if you want something built to last.

Sihoo Doro S100 Overview

Features	Details
Lumbar Support	Dual dynamic system with two spring-mounted mesh pads that adjust with movement
Backrest	Independent upper section, adjustable in five height levels
Armrests	4D coordinated design (up/down, forward/backward, angled, synchronized with recline)
Seat Depth	Adjustable forward and backward up to 2 inches
Recline Function	Up to 135°, with smooth tilt tension control
Seat Design	Waterfall-shaped edge for thigh support and better circulation
Material	High-elastic, breathable mesh on both seat and backrest
Certifications	BIFMA & SGS certified for durability and safety
Color Options	Black and white
Warranty	3 years (through Sihoo or U.S. retailers)
Retail Availability	Amazon, Walmart, Best Buy, Sihoo Official Store

Recommendation

If you’re looking for a modern ergonomic chair that adapts to your body and keeps you cool all day, the Sihoo Doro S100 is an excellent option. It’s perfect for:

• Remote professionals who sit for 6+ hours a day.
  
• Gamers who want adjustable support without spending over $500.
  
• Home office setups that need a sleek, breathable, and durable chair.
  

However, if you prefer plush padding or a heavier, premium build, you might find the feel a bit light compared to chairs like the Steelcase Leap or Herman Miller Aeron.

Overall, the Doro S100 strikes a strong balance between comfort, innovation, and value. It shows that Sihoo continues to push ergonomic design forward — making professional-grade comfort more affordable for everyone.

To buy this product, Click here.

Sihoo M57 vs Doro S100 Detailed Comparison

After spending several weeks using both the Sihoo M57 and Sihoo Doro S100, I can confidently say these two chairs cater to different kinds of comfort seekers. Both are ergonomic, adjustable, and durable, but they feel very different once you sit down.

If you’re trying to decide between them, here’s my side-by-side experience — what I liked, what could be better, and how they stack up in real daily use.

Ergonomic Design: Sihoo M57 vs Doro S100

The Sihoo M57 has a simple and effective S-shaped frame. It gives strong spinal support and keeps your posture upright. The Doro S100 feels more advanced, thanks to its dual dynamic lumbar support that adjusts as you move.

In daily use, I felt the M57 was steady and predictable — great for focused work. The Doro S100 felt more flexible and “alive,” especially when leaning or changing sitting positions. If you move a lot during your workday, that dynamic support really shines.

Feature	Sihoo M57	Sihoo Doro S100
Backrest Design	Fixed S-shaped ergonomic frame	Independent upper backrest with adjustable height
Lumbar Support	Single adjustable support pad	Dual dynamic lumbar system with spring tension
Adjustability	Moderate	Highly adjustable
Comfort Feel	Firm and structured	Adaptive and flexible
My Rating	⭐ 8.5/10	⭐ 9/10

My Experience:
The Doro S100 feels more “responsive,” while the M57 gives a firmer, more traditional ergonomic feel. Both support good posture, but I found the Doro more forgiving during long editing sessions.

Seat Comfort and Breathability: Sihoo M57 vs Doro S100

Both chairs use breathable mesh, which is perfect for long hours in warm weather. The M57 has a slightly softer seat base, while the Doro S100 uses tighter mesh that gives more bounce and airflow.

After sitting for hours during video editing, my back and thighs stayed cooler on the Doro. The M57, however, feels more padded and supportive if you prefer a firm base.

Feature	Sihoo M57	Sihoo Doro S100
Seat Material	Double-layer breathable mesh	Elastic full-mesh construction
Seat Depth	Fixed	Adjustable (forward/backward by 2″)
Seat Edge	Waterfall design for leg comfort	Waterfall edge with broader thigh support
Airflow	Good	Excellent
My Rating	⭐ 8/10	⭐ 9/10

My Experience:
If you work in a warm room or tend to sweat while sitting long hours, the Doro S100 wins. The seat’s mesh feels more elastic and cooling. The M57 feels firmer — better if you like solid support under you.

Adjustability and Features: Sihoo M57 vs Doro S100

This is where the Doro S100 really stands out. It offers a deeper recline, an adjustable seat base, 4D armrests, and a flexible backrest system. The M57, while still very ergonomic, sticks to the essentials: 3D armrests, headrest height control, and tilt lock.

Feature	Sihoo M57	Sihoo Doro S100
Armrests	3D adjustable	4D coordinated armrests
Recline Range	90°–126°	90°–135°
Seat Depth Adjustment	No	Yes
Headrest	Adjustable height and tilt	Adjustable height and angle
Backrest Height	Fixed	5-level height adjustment
My Rating	⭐ 8/10	⭐ 9.5/10

My Experience:
The extra flexibility in the Doro S100 made a big difference during long workdays. I loved being able to shift posture without losing lumbar support. The M57, while simpler, still offers smooth and reliable adjustments that feel sturdy.

Build Quality and Durability: Sihoo M57 vs Doro S100

Both chairs feel solid, but they differ in material finish. The M57 has a metal base and thick mesh, which gives it a stable and grounded feel. The Doro S100 feels lighter yet more advanced in movement due to its flexible frame and spring-based lumbar support.

Feature	Sihoo M57	Sihoo Doro S100
Base Material	Aluminum alloy	Aluminum alloy
Frame	Reinforced plastic	Hybrid flexible frame
Certifications	BIFMA & SGS certified	BIFMA & SGS certified
Longevity Feel	Sturdy and classic	Advanced but slightly lighter
My Rating	⭐ 9/10	⭐ 8.5/10

My Experience:
The M57 feels tougher and more traditional. The Doro’s moving lumbar parts make it more advanced, but possibly more delicate over time. I’d trust the M57 slightly more for durability, though both are well-built for daily use.

Performance: Sihoo M57 vs Doro S100

When it comes to all-around comfort and function, both chairs perform very well. The M57 keeps posture aligned and stable, while the Doro S100 adapts to motion and helps reduce fatigue.

Performance Factor	Sihoo M57	Sihoo Doro S100
Long Sitting Comfort	Great	Excellent
Posture Support	Strong	Adaptive
Recline Feel	Smooth	More dynamic
Noise & Stability	Very quiet	Slightly springy but stable
My Rating	⭐ 8.5/10	⭐ 9/10

My Experience:
For focused, task-based work, I found the M57 a bit better. But for flexible, all-day comfort — especially when I shift between writing, reading, or watching — the Doro S100 felt more natural.

Ease of Use: Sihoo M57 vs Doro S100

Both chairs arrive with decent instructions, though the M57 is quicker to assemble. The Doro takes longer due to its extra moving parts. Once set up, both are intuitive to adjust.

Feature	Sihoo M57	Sihoo Doro S100
Assembly Time	25–30 minutes	40–45 minutes
Adjustment Learning Curve	Simple	Moderate
Maintenance	Easy	Easy
Everyday Comfort	Reliable	Adaptive
My Rating	⭐ 9/10	⭐ 8.5/10

My Experience:
The M57 is easier to set up and get used to. The Doro S100 takes a few days to fine-tune, but once adjusted, it’s worth it.

Value for Money: Sihoo M57 vs Doro S100

The M57 typically retails around $280–$300, while the Doro S100 costs about $360–$400. Both feel fairly priced for what they offer, though the Doro adds more innovation per dollar.

Feature	Sihoo M57	Sihoo Doro S100
Price Range	$280–$300	$360–$400
Features-to-Price Ratio	Excellent	Very Good
Long-Term Comfort	Great	Excellent
Durability vs Cost	Strong	Moderate
My Rating	⭐ 9/10	⭐ 8.8/10

My Experience:
If you’re on a budget, the M57 gives you everything you need for solid ergonomic support. But if you want next-level flexibility and better lumbar technology, the Doro S100 feels worth the upgrade.

Overall: Sihoo M57 vs Doro S100

After weeks of use, I’d say both chairs deliver real ergonomic value. The Sihoo M57 feels reliable, supportive, and perfect for focused work sessions. The Doro S100 feels more adaptive, airy, and advanced — ideal if you move around a lot during the day.

Category	Sihoo M57	Sihoo Doro S100
Ergonomics	8.5/10	9/10
Comfort	8/10	9/10
Adjustability	8/10	9.5/10
Build Quality	9/10	8.5/10
Performance	8.5/10	9/10
Ease of Use	9/10	8.5/10
Value for Money	9/10	8.8/10
Overall Rating	⭐ 8.7/10	⭐ 9/10

Final Verdict

If you want firm support and classic ergonomics, go for the Sihoo M57 — it’s dependable and comfortable for focused desk work.

If you prefer a dynamic, high-tech experience that moves with you, the Sihoo Doro S100 is the smarter choice. It’s especially great for long hours or hybrid home-office setups.

In short, both chairs show how Sihoo is redefining ergonomic design — the M57 for structure and stability, and the Doro S100 for motion and adaptability.

FAQs for Sihoo M57 vs Doro S100

1. Which chair is better for long working hours, Sihoo M57 or Doro S100?

The Sihoo Doro S100 offers better comfort for long hours with its dynamic lumbar support and breathable mesh. The M57 feels firmer but still supportive.

2. Is the Sihoo Doro S100 worth the extra price over the M57?

Yes, if you value more flexibility and posture adaptability. The Doro S100 has advanced lumbar design and 4D armrests, making it worth the upgrade for daily use.

3. How does the lumbar support differ between Sihoo M57 and Doro S100?

The M57 has a single adjustable lumbar pad, while the Doro S100 uses a dual dynamic system that flexes with your back, offering more adaptive support.

4. Which chair is easier to assemble, Sihoo M57 or Doro S100?

The Sihoo M57 is quicker to assemble, taking about 25–30 minutes. The Doro S100 has more adjustable parts, so setup takes a bit longer but remains simple.

5. Which one gives better value for money, Sihoo M57 or Doro S100?

The Sihoo M57 offers excellent value with its strong ergonomics at a lower price. The Doro S100 costs more but provides premium flexibility and modern features.