My Honest SIHOO M18 Ergonomic Office Chair Review

Last Updated on October 28, 2025 by Cassie Moorhead

If you’re searching for honest insights before buying, this sihoo m18 ergonomic office chair review will save you some guesswork. I’ve spent months using it for long workdays, and it’s one of the few chairs that keeps my back happy without costing a fortune. As someone who’s tested several ergonomic models, I found the M18 surprisingly solid for daily comfort. Let’s see if it’s the right fit for your workspace and posture needs.

Sihoo M18 Ergonomic Office Chair Review

If you’ve been searching for a chair that blends comfort, adjustability, and long-term value, this sihoo m18 ergonomic office chair review might help you decide. After months of sitting through long workdays, I’ve found the SIHOO M18 strikes a rare balance between price and posture support. It’s not perfect, but it’s easily one of the most dependable mid-range ergonomic chairs I’ve used—especially if you care about your back health and comfort during 8-hour shifts.

What I Like

• Solid Ergonomic Design: The SIHOO M18 delivers true ergonomic value. Its adjustable headrest and lumbar support felt surprisingly natural compared to pricier models. After adjusting the height and tilt, I noticed my posture improving within a week. For remote work in the U.S., this makes it a great home-office companion.
• Excellent Lumbar Support: This feature deserves special mention. The lumbar support isn’t just a curved pad—it flexes slightly with your movement, keeping your spine aligned. I used to experience lower back strain with cheaper chairs, but the M18’s backrest keeps my posture steady for long hours.
• Comfortable Memory Foam Cushion: The seat cushion is made from dense memory foam that feels firm yet responsive. Even after long calls and meetings, it doesn’t flatten out. This is a huge plus if you’re used to sitting all day in air-conditioned offices.
• BIFMA-Certified Durability: Knowing that the SIHOO M18 meets BIFMA standards gives me confidence in its build quality. The sturdy frame and PU wheels glide smoothly across my hardwood floor without scuffing—a subtle but important feature for U.S. home setups.
• Great Value for the Price: Compared to chairs double its cost, the M18 performs incredibly well. You get genuine ergonomic features without paying premium-brand prices. For anyone balancing comfort and budget, it’s a smart buy.

Summary: The SIHOO M18 shines with comfort, adjustability, and certified durability, making it ideal for anyone seeking an affordable ergonomic upgrade.

What Could Be Better

• Armrest Adjustability: While the armrests are padded and height-adjustable, they don’t move sideways or rotate. More flexibility would help users fine-tune comfort for typing or gaming.
• Seat Width for Larger Users: Though it supports big and tall individuals, the seat base could be slightly wider. U.S. users with broader frames might prefer a chair with more side support.
• Tilt Tension Mechanism: The tilt lock works fine, but the resistance adjustment feels a bit stiff. A smoother recline control would make the chair feel more premium.

Summary: Small tweaks to the armrest range, seat width, and tilt resistance could elevate the M18 from great to exceptional.

My Personal Experience with SIHOO M18

Over several months, I tested the SIHOO M18 through long work sessions and creative marathons. Here’s what stood out for me:

• The setup was straightforward—took about 20 minutes with clear instructions.
• I noticed immediate relief in my lower back after switching from a basic mesh chair.
• The adjustable headrest made long reading sessions much easier on my neck.
• Breathable mesh kept me cool, even in warm weather.
• The seat foam didn’t sag, even after months of daily use.
• Rolling across my office floor felt smooth and quiet—no annoying creaks.
• My shoulders felt less tense thanks to the recline support.
• Friends who visited often commented on how “premium” it looked.
• Customer support was responsive when I asked about spare parts.
• After three months, there’s no wobble or wear—still feels brand new.

Summary: Day-to-day use proved the M18 is more than just stylish—it’s reliable, supportive, and comfortable for long-term work-from-home use.

Comparing with Other Brand

I’ve also used the Steelcase Series 1, another popular ergonomic chair known for its build quality and long warranty. While Steelcase offers a more premium feel, the SIHOO M18 holds its ground surprisingly well in real-world comfort and value.

SIHOO M18 vs Steelcase Series 1: Quick Comparison

Feature	SIHOO M18 Ergonomic Office Chair	Steelcase Series 1
Price Range	Budget-friendly	Premium (~$500–$600)
Ergonomic Adjustments	Adjustable headrest, lumbar, tilt, and height	Advanced back tension and arm adjustability
Seat Comfort	Memory foam, firm yet soft	Softer cushioning with flexible seat edge
Build Quality	Aluminum base, BIFMA-certified	Heavy-duty steel frame, BIFMA-certified
Ideal User	Office workers, home offices	Corporate environments, heavy daily use
Overall Value	Excellent for its price	Premium comfort, higher cost

Summary: The SIHOO M18 wins in affordability and comfort balance, while Steelcase takes the lead in fine-tuned adjustability and long-term ergonomics.

Recommendation

If you’re someone who spends long hours at your desk, the SIHOO M18 ergonomic office chair is a great investment. It’s perfect for remote professionals, students, and anyone who values comfort without spending a fortune.

However, if you’re a U.S. user who prioritizes extensive customization or wants a luxury finish, you might prefer brands like Steelcase or Herman Miller. Still, for its price, the M18 covers 90% of what those high-end chairs offer.

Read More:

Sihoo M57 Chair Review: Unfiltered Thoughts After Weeks of Use

Sihoo Doro C300 Review: My Personal Experience Explained

Sihoo Doro S100 Review: My Honest Daily Experience

FAQs: SIHOO M18 Ergonomic Office Chair Review

1. Is the SIHOO M18 ergonomic office chair good for long hours?
Yes, it’s built for long sitting sessions. The adjustable lumbar and headrest help reduce back strain during 8+ hour workdays.

2. Does the SIHOO M18 support tall or heavy users?
Absolutely. It’s designed for big and tall users, holding up to 330 lbs while keeping a stable and comfortable posture.

3. How comfortable is the SIHOO M18 for home offices?
The memory foam seat and breathable mesh make it great for home use, keeping you cool and supported during long workdays.

4. Is the SIHOO M18 chair easy to assemble?
Yes, setup takes about 20 minutes. The parts are labeled clearly, and the included tools make it simple for one person to build.

5. How does the SIHOO M18 compare to high-end chairs?
While pricier chairs like Herman Miller offer finer tuning, the M18 provides 90% of that comfort at a much lower cost—great value overall.