Last Updated on September 10, 2025 by Cassie Moorhead

If you’re stuck choosing between the SIHOO M59AS vs M57, I’ve tried both and can share how they compare. The M59AS feels more advanced with its adaptive lumbar and saddle seat, while the M57 stands out as a sturdy and budget-friendly option. From my own use, both chairs deliver solid comfort, but in different ways. Let’s break it down so you can see which one fits your work style best.

Is the SIHOO M59AS Ergonomic Office Chair Good?

Yes, the SIHOO M59AS is a solid ergonomic office chair. I’ve been using it for work and casual use, and it feels well thought out. The double back design and adaptive dynamic lumbar support make a big difference when I sit for long hours.

The mesh material keeps airflow steady, which is helpful if you’re in a warm climate or sit for long stretches. I usually sit in front of my computer for most of the day, and this chair doesn’t trap heat the way my older leather chair did.

Assembly was simple. It took me around 20 minutes to get everything set up. The parts feel sturdy, and the chair carries both BIFMA and SGS certifications, which gives me more confidence in its durability.

For context, I’m about 5’10” and 180 lbs, and the chair fits me well. If you’re taller, the adjustable headrest should still cover you comfortably up to around 6’2” or 6’3”.

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What I Like

• Ergonomic support that adapts to me
  The adaptive lumbar support really adjusts with my lower back when I lean or shift. It feels more natural than fixed support panels.
• Freedom with armrests
  The 3D flip-up armrests are handy. I flip them up when I want more space, like when I play guitar or sit cross-legged. They also move forward, backward, inward, and outward, which gives more flexibility than most budget chairs.
• Breathable mesh and wide seat
  The mesh material keeps me cool, and the saddle-shaped cushion feels supportive without being stiff. The seat is wide enough to stretch out without feeling cramped.
• Build quality with certifications
  The chair feels stable, and the BIFMA and SGS certifications matter. In the US, many workplaces follow BIFMA standards, so it gives some extra assurance if you want to use it in a home office setup.

What Could Be Better

• Price point
  It’s not the cheapest option. While you get value in ergonomics and build, some buyers might find it a little pricey compared to entry-level chairs.
• Footrest absence
  I sometimes wish it had a footrest. For the price, having one included would make it more complete for relaxing.
• Seat cushion firmness
  The saddle shape cushion is supportive, but it might feel firm if you’re used to very soft padding. I got used to it after a week, but it’s worth noting.

Recommendation

The SIHOO M59AS is a great fit if you work from home, spend long hours at a desk, or want a breathable mesh office chair that offers real ergonomic adjustments. It works especially well if you need adjustable lumbar support and flexible armrests.

If you’re taller than 6’3” or prefer very soft seating, you may want to try it in person before buying. Also, if you’re on a strict budget, you might consider the SIHOO M57 or another entry-level ergonomic chair instead.

For US buyers, the fact that it meets BIFMA standards is a plus, especially if you want a chair that feels “office-grade” and not just home-use.

Overall, I’d recommend it for anyone looking for a durable, ergonomic chair with strong lumbar support and versatile features.

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Is the SIHOO M57 Ergonomic Office Chair Good?

Yes, the SIHOO M57 is a good chair. I’ve used it daily for work, and it feels strong and reliable. The mesh back keeps me cool, which is better than the heavy leather chair I had before.

It also adjusts well. The headrest, armrests, and tilt settings let me sit in different ways without strain. The aluminum base adds stability, and the BIFMA certification makes me trust its build.

It is not perfect. The lumbar support works but takes time to set right. The headrest can feel awkward until you find the right angle. Still, for the price, it’s a chair that gives solid comfort and value.

What I Like

• Strong build
  The frame feels solid and secure. I leaned back many times and it never felt weak.
• Easy adjustments
  The armrests and headrest give me enough ways to sit with comfort.
• Breathable mesh
  The backrest allows air to pass through. On warm days, this helped a lot.
• Trusted brand
  SIHOO is well known online. In the USA, I found plenty of buyer reviews before I ordered.

What Could Be Better

• Armrest padding
  The armrests adjust well, but they feel firm. Softer pads would help.
• Headrest range
  The headrest works, but I had to move it often. More tilt options would be better.
• Recline limit
  The recline is fine, but it doesn’t go very far back.

Recommendation

The SIHOO M57 is great for:

• People who need a mesh office chair for long workdays.
• Remote workers or students in the USA who want comfort without high prices.
• Buyers who want a durable, certified ergonomic chair at a mid-range cost.

It may not suit you if you want a very soft seat or a chair that reclines far. But for most people, it’s a safe choice that balances comfort, strength, and price.

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Detailed Comparison: SIHOO M59AS vs M57

I’ve used both the SIHOO M59AS and the SIHOO M57 ergonomic office chairs. Each has strong points, but they serve slightly different needs. Let me break down what I found.

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Build Quality: SIHOO M59AS vs M57

Feature	SIHOO M59AS	SIHOO M57
Frame	Strong, modern design	Reinforced aluminum base
Support	Double back structure	Single mesh back
Stability	Feels adaptive but stable	Feels firm and secure

👉 My take: The M59AS feels more modern and adaptive, while the M57 feels tough and solid.

• M59AS rating: 9/10
• M57 rating: 8/10

Adjustability: SIHOO M59AS vs M57

Feature	SIHOO M59AS	SIHOO M57
Armrests	3D flip-up	3-way
Headrest	Tiltable, smooth	Adjustable, less flexible
Lumbar	Adaptive dynamic support	Fixed lumbar support

👉 My take: The M59AS adapts faster and needs less tweaking. The M57 works, but I kept adjusting the headrest.

• M59AS rating: 9/10
• M57 rating: 7.5/10

Comfort: SIHOO M59AS vs M57

Feature	SIHOO M59AS	SIHOO M57
Seat	Saddle-shape cushion	Flat mesh seat
Pressure relief	Better, reduces leg strain	Basic, firmer feel
Breathability	High	High

👉 My take: After long hours, the M59AS stayed comfy. The M57 felt a bit stiff over time.

• M59AS rating: 9/10
• M57 rating: 7/10

Ergonomics: SIHOO M59AS vs M57

Feature	SIHOO M59AS	SIHOO M57
Back design	Double back support	Standard mesh back
Lumbar system	Adaptive springs	Static support
Posture fit	Moves with body	Fixed fit

👉 My take: The M59AS gave me better posture care. The M57 did fine but felt more rigid.

• M59AS rating: 9.5/10
• M57 rating: 8/10

Certifications & Safety: SIHOO M59AS vs M57

Feature	SIHOO M59AS	SIHOO M57
BIFMA	Yes	Yes
SGS	Yes	Yes
Weight support	330 lbs	330 lbs

👉 My take: Both chairs meet safety standards, which is great for USA buyers since many workplaces need these.

• M59AS rating: 9/10
• M57 rating: 9/10

Performance: SIHOO M59AS vs M57

👉 The M59AS kept me comfortable for long hours, especially with its dynamic lumbar support.
👉 The M57 gave me stability and reliability, but not the same adaptive comfort.

• M59AS rating: 9/10
• M57 rating: 8/10

Ease of Use: SIHOO M59AS vs M57

👉 The M59AS has smoother controls and felt easier to adjust.
👉 The M57 is simple, but it took longer to fine-tune settings.

• M59AS rating: 9/10
• M57 rating: 7.5/10

Value for Money: SIHOO M59AS vs M57

👉 The M59AS costs more, but it delivers advanced ergonomics. For me, it was worth it since I sit for 8+ hours daily.
👉 The M57 is more affordable and still a good ergonomic chair for shorter or lighter use.

• M59AS rating: 8.5/10
• M57 rating: 8/10

Overall: SIHOO M59AS vs M57

👉 If you want modern ergonomics and adaptive support, the SIHOO M59AS is the better choice.
👉 If you want a sturdy, simple, and affordable option, the SIHOO M57 is a safe pick.

• M59AS rating: 9/10
• M57 rating: 8/10

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