Sihoo M59AS vs C300: Honest Insights From Use

Last Updated on October 7, 2025 by Cassie Moorhead

When I compared the sihoo m59as vs c300, I found both chairs shine in different ways. The M59AS feels wider and sturdy, while the C300 is sleek with smart lumbar. After long hours working from home in the US, I noticed the C300 supports posture better, but the M59AS gives more space and value. Based on my hands-on use, I’ll break down each feature so you can pick the chair that fits your needs best.

SIHOO M59AS Review

The SIHOO M59AS ergonomic office chair is simple, light, and easy to use. I’ve used it for work, gaming, and even relaxing. It feels cooler than a leather chair because of the mesh. The support moves with me, so I don’t get stiff after long hours.

The double back design and adaptive lumbar support make a big difference. I can sit forward when typing, or lean back during breaks, and it still feels supportive. For me, it works well in a home office or a small workspace.

In short, this chair is comfortable, breathable, and built for daily use.

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What I Like

• Dynamic lumbar support – It adjusts when I lean back, so my lower back feels supported.
• Flip-up armrests – I can move them up when I want to sit cross-legged or play guitar.
• Strong build – With BIFMA and SGS certification, I trust it to last.
• Wide seat with mesh – I don’t feel sweaty, even after hours of sitting.

What Could Be Better

• Assembly tools – Setup was easy, but the included tools felt basic.
• Headrest range – At 5’10” it works for me, but shorter users may find it too high.
• Stock in the U.S. – It’s sometimes harder to find than bigger brands.

Is the SIHOO M59AS Good?

Yes, it’s good. The chair feels supportive yet light. The mesh keeps me cool, and the lumbar support moves as I move. I used it while writing for hours and during short breaks. It felt natural in both cases.

For tall users (up to 6’2”), the headrest tilt adds comfort. For mid-height users like me, the chair feels balanced.

SIHOO M59AS Overview

Feature	Details
Brand	SIHOO
Chair Type	Ergonomic Office Chair
Back Design	Double Back with Adaptive Lumbar Support
Armrests	3D Flip-up, multi-directional
Material	Breathable mesh
Weight Capacity	330 lbs (BIFMA + SGS Certified)
Headrest	Height and tilt adjustable
Seat	Wide, flexible sitting
Certifications	BIFMA & SGS
Best Use	Office, home office, gaming

Recommendation

I’d suggest the SIHOO M59AS for anyone who:

• Works long hours at a desk.
• Wants a breathable mesh chair instead of leather.
• Needs flexible armrests for casual sitting or hobbies.

It may not be perfect for people under 5’6”, since the headrest could sit high. And in the U.S., stock is sometimes limited. But overall, it gives solid comfort at a fair price.

In short: the SIHOO M59AS is a strong ergonomic chair choice. It’s simple, cool, and supportive for daily sitting.

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SIHOO C300 Review

The SIHOO Doro C300 is a light and modern office chair. It is built for daily work, gaming, and long hours at a desk.

The chair’s Domino lumbar support is its best feature. It adapts as I move and keeps my back in a good spot. Unlike fixed support, it feels natural and easy.

The mesh back is cool and breathable. Even after hours of sitting, I never felt hot or stuck. The Gravity tilt system makes leaning back smooth. It adjusts to weight, so I don’t have to push hard.

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What I Like

• Domino lumbar – My back stays upright without strain.
• 3D armrests – Move up, down, in, out, forward, and back.
• Strong build – Certified by BIFMA, TUV, and an SGS Class 4 gas lift.
• Breathable mesh – Stays cool for long sitting.

What Could Be Better

• Setup – Not hard, but took longer than expected.
• Price – Higher than entry chairs, though the features explain it.
• Look – The chrome base feels basic for a modern design.

Is the SIHOO C300 Good?

Yes, it is. The C300 feels supportive and smooth. The Domino lumbar system adapts as I type or lean. The Gravity tilt makes breaks more relaxing.

It is strong, safe, and stays cool. For me, it works well for office tasks and home use.

SIHOO C300 Overview

Feature	Details
Brand	SIHOO
Model	Doro C300
Type	Ergonomic Office Chair
Lumbar Support	Domino auto-adaptive
Armrests	3D adjustable
Tilt	Gravity mechanism, auto balance
Material	Mesh
Certifications	BIFMA, TUV, SGS
Capacity	330 lbs
Headrest	Adjustable height and tilt

Recommendation

The SIHOO C300 is best for people who:

• Work long hours at a desk.
• Want posture support without stress.
• Prefer a mesh chair that stays cool.

It may not fit a small budget. But if you want comfort and safety, it is worth it.

In short: The C300 is a simple, strong, and ergonomic chair. It helps with posture, keeps you cool, and lasts daily use.

To Buy This Product, Click Here.

Details Comparison: sihoo m59as vs c300

I’ve used both the SIHOO M59AS and the SIHOO C300. Both are ergonomic chairs but with different strengths. Let’s compare them feature by feature.

Build Quality: sihoo m59as vs c300

The M59AS feels solid and heavy. The base and frame give strong support. The C300 looks more modern, but feels lighter.

• My take: M59AS = sturdy, C300 = sleek.

Feature	SIHOO M59AS	SIHOO C300
Frame strength	Very sturdy	Sleek but lighter
Base stability	Wide, solid	Slim, modern
Durability feel	High	Medium-high
Rating	9/10	8/10

Seat Comfort: sihoo m59as vs c300

The M59AS has a wide, firm mesh seat. I could sit cross-legged with ease. The C300 is slimmer, but cooler during long hours.

• My take: M59AS = space, C300 = cooling comfort.

Feature	SIHOO M59AS	SIHOO C300
Seat width	Wide	Slimmer
Firmness	Firm mesh	Softer mesh
Heat control	Good	Better
Rating	9/10	9/10

Lumbar Support: sihoo m59as vs c300

The M59AS uses a spring lumbar. It felt firm and stable. The C300 has an auto-adaptive lumbar. It shifts with posture and feels smarter.

• My take: M59AS = steady, C300 = adaptive.

Feature	SIHOO M59AS	SIHOO C300
Type	Spring-based	Auto-adaptive
Support feel	Firm	Smooth, posture-based
Long-use comfort	Good	Excellent
Rating	9/10	9/10

Armrest Adjustability: sihoo m59as vs c300

The M59AS armrests flip up fully. I liked sliding it under my desk. The C300 has 3D armrests. They adjust in and out, but don’t flip up.

• My take: M59AS = flexible, C300 = refined.

Feature	SIHOO M59AS	SIHOO C300
Type	Flip-up	3D adjustable
Desk fit	Easy	Limited
Comfort	Solid	Smooth
Rating	9/10	8/10

Recline & Tilt: sihoo m59as vs c300

The M59AS has a standard tilt and lock. Works fine, but feels manual. The C300 has smart gravity tilt. It adjusts to weight, smooth and easy.

• My take: M59AS = basic, C300 = advanced.

Feature	SIHOO M59AS	SIHOO C300
Tilt type	Manual lock	Gravity auto-tilt
Recline smoothness	Standard	Very smooth
Relax use	Fair	Excellent
Rating	8/10	9/10

Performance: sihoo m59as vs c300

In daily use, the M59AS gave space and balance. The C300 gave posture and smooth tilt.

• My take: M59AS = wide comfort, C300 = smart ergonomics.

Feature	SIHOO M59AS	SIHOO C300
Best for	Movement freedom	Posture correction
Long sessions	Good	Better
Overall feel	Balanced	Refined
Rating	9/10	9/10

Ease of Use: sihoo m59as vs c300

Both were simple to build. The M59AS took me 20 minutes. The C300 felt lighter and clicked into place faster.

• My take: both are easy.

Feature	SIHOO M59AS	SIHOO C300
Build time	20 min	15 min
Setup ease	Smooth	Very smooth
Daily use	Intuitive	Intuitive
Rating	9/10	9/10

Value for Money: sihoo m59as vs c300

The M59AS is cheaper and still premium. The C300 is pricier, but gives sleek design and tilt tech.

• My take: M59AS = budget king, C300 = design upgrade.

Feature	SIHOO M59AS	SIHOO C300
Price range	Lower	Higher
Feature worth	High	Medium-high
Best for	Budget users	Style + posture users
Rating	9/10	8/10

Overall: sihoo m59as vs c300

Both are strong choices. The M59AS shines for space, stability, and price. The C300 shines for posture, design, and smooth tilt.

• If you want a budget-friendly sturdy chair → go for M59AS.
• If you want a sleek ergonomic chair → go for C300.

Category	SIHOO M59AS	SIHOO C300
Build Quality	9/10	8/10
Seat Comfort	9/10	9/10
Lumbar Support	9/10	9/10
Armrests	9/10	8/10
Recline & Tilt	8/10	9/10
Performance	9/10	9/10
Ease of Use	9/10	9/10
Value for Money	9/10	8/10
Overall	9/10	9/10

FAQs for sihoo m59as vs c300

Which chair is better, the SIHOO M59AS or the C300?

The SIHOO M59AS is sturdy and budget-friendly. The C300 is sleek with smart lumbar support. The best choice depends on your style and posture needs.

Is the SIHOO M59AS more comfortable than the C300?

The M59AS has a wide, firm seat for space and balance. The C300 feels slimmer but cooler. Comfort depends on whether you prefer room or posture fit.

How does lumbar support compare in SIHOO M59AS vs C300?

The M59AS uses firm spring lumbar, while the C300 adapts to posture with auto lumbar. Both give strong back support, but the C300 feels more dynamic.

Which has better value for money, SIHOO M59AS or C300?

The M59AS costs less and still feels premium. The C300 is higher priced with better tilt and design. M59AS wins for budget, C300 for modern ergonomics.

Is the SIHOO C300 worth the extra price over M59AS?

The C300 offers a slim build, auto lumbar, and smooth tilt. If you value these extras, it is worth the price. If not, the M59AS saves money.