2D Adjustable Headrest
Gives your neck the support it needs. Whether you’re typing, reading, or leaning back to think, so, long work sessions feel easier on your upper body.
Sihoo M57 Ergonomic Office Chair with Breathable Mesh Cushion
Sihoo M57 Ergonomic Office Chair with Breathable Mesh Cushion
Rated 4.8 out of 5 stars
96 Reviews
"M57 is comfortable to sit on, whether that's for a couple hours or more a proper marathon work slog." Georgia Coggan, from CREATIVE BLOQ
Regular price
$199.99
Regular price
$299.99
Sale price
$199.99
Unit price
per
Shipping calculated at checkout.
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Product Description
Product Description
Key Features
Key Features
Stay cool all day:
Full breathable mesh keeps air flowing to prevent heat and sweat buildup, so you stay comfortable during long work or gaming sessions.
Personalized support:
Dual-adjustable lumbar support and 3D armrests adapt to your posture—helping reduce lower-back strain and keeping your shoulders relaxed.
Comfort that follows your shape:
A streamlined, contoured backrest maintains the natural “S” curve of your spine for balanced, full-back comfort.
Relax with confidence:
Reclines up to 126° for effortless breaks, with a supportive headrest that adjusts in height and angle to fit your neck perfectly.
Built strong, built to last:
Supports up to 330 lbs and constructed with a steel gas lift, aluminum alloy legs, and quality components—certified by BIFMA and SGS for durability you can trust.
Trusted by reviewers:
Recognized by Creativebloq, TechRadar, ExpertReviews, and more as one of the best budget-friendly ergonomic chairs.
Assembly Instruction
Assembly Instruction
View assembly instructions 1/1 (PDF)
Product Adjustment：
Materials
Materials
Durable breathable mesh:
PE + polyester mesh is used across the entire chair—including the seat and backrest—providing excellent airflow, tear resistance, UV resistance, and long-lasting durability without fading.
Reinforced PP-fiber structure:
The headrest, backrest frame, lumbar frame, and seat frame are made from strengthened PP + fiber materials for stable, long-term support.
Comfort-focused mesh headrest:
A PP-fiber headrest wrapped in breathable mesh adjusts vertically and rotates 45° to fit your natural neck curve.
S-curve backrest design:
The PP-fiber back frame follows your spine’s natural S-shape, delivering balanced upper- and lower-back support.
Enhanced lumbar cushion:
A thick, foam-padded lumbar support offers stronger lower-back comfort throughout long work sessions.
3D armrests with steel support:
Armrest frames use electroplated Q235 steel + PA material, paired with soft PU tops that adjust in height, depth, and rotation.
High-resilience front-edge foam:
The front edge of the seat—where your thighs make contact—uses high-elastic molded foam (density 60, hardness 50) to relieve leg pressure and prevent discomfort.
Breathable mesh seat surface:
The seat surface itself is made of the same PE + polyester mesh as the backrest, offering full breathability so you stay cool even during long hours of sitting.
Heavy-duty tilt mechanism:
A cold-rolled steel multifunctional mechanism provides smooth height adjustment, recline tension control, and a 3-position recline lock.
Certified gas lift:
A Class-3 gas lift, tested and certified by SGS and BIFMA, ensures safe, reliable height adjustment.
Electroplated metal base:
A 350-rated electroplated metal base meets BIFMA standards for strength and durability.
Quiet PU casters:
Large, smooth-rolling PU wheels glide quietly and protect floors from scratches.
Promise
Promise
30-Day Free Returns.: Try the chair for 30 days. If it’s not for you, feel free to return it.
3-Year Warranty: Enjoy lasting comfort and peace of mind with our 3-year warranty.
Satisfaction Guarantee: For any issues, contact support_ca@sihoo.com for prompt assistance and guaranteed satisfaction.
Overcome sitting pain
Save money
Enhance workplace
Sustainable development
Bulk order
Order office chairs in bulk from Sihoo Canada and enjoy premium quality at wholesale prices. Perfect for businesses, offices, and large-scale setups, our office chair bulk order service ensures comfort, durability, and great value.
- Buy 2 Get $30 OFF
- Buy 3 Get $50 OFF
- Buy 5 Get 10% OFF
For more requirements, contact support_ca@sihoo.com
Loved by our community
4 reasons to love Sihoo M57 Ergonomic Chair
Stay fresh during long hours
In back-to-back meetings or focused on a project, the mesh seat, back, and headrest keep air flowing so you stay cool and comfortable all day.
Comfortable thigh support
The front edge of the seat features high-resilience foam that gently supports your thighs, reducing pressure and fatigue during long hours at your desk.
Relax your posture naturally
With thoughtful design supporting your spine and back, you can maintain a natural, relaxed posture even during extended periods of sitting.
Move silently without scratches
Quiet PU casters glide smoothly, letting you move between desk, shelf, or conference table without disturbing coworkers or scratching floors.
For every part of you
Adjustable Support in Any Sitting Position
2D Adjustable Lumbar Support
Adjusts to follow your lower-back curve, keeping you comfortably supported during hours of focused work, deep concentration, or late-night deadlines.
3D Adjustable Armrest
3D armrests move up/down, forward/back, and rotate side-to-side, letting your arms rest naturally. With wide, cushioned pads, your shoulders stay relaxed whether you’re typing, drawing, or gaming.
3-Stage Adjustable Recline
Lets you shift from upright focus to mid-task relaxation to deep lean-back breaks, giving you a comfortable angle for every moment of your day.
Cool, Easy, All-Day Comfort
Ergonomic Design
Supports your head, neck, spine, and tailbone exactly where you need it. Perfect for long hours at your desk, reducing strain and keeping your posture aligned throughout the day.
Breathable Mesh
Air flows freely through the headrest, back, and seat, while high-resilience mesh keeps you cool. Stay comfortable and sweat-free even during marathon work sessions or long meetings.
Soft Front Edge
Relieves pressure on your thighs and tailbone, so your legs stay comfortable and circulation stays smooth. Sit for hours without numbness or fatigue.
Sihoo 3rd-Generation Adjustable Base
Smoothly adjusts your seat height and recline tension, letting you find the perfect balance between upright focus and relaxed leaning. Keeps you supported during extended work or study sessions.
Silent Wheels
Glide effortlessly across your floor without noise or scratches, letting you move between desk, printer, or meeting area without disrupting your flow and your coworkers.
Certified Quality, Trusted by Experts
Find the Right Fit
| Product |
Regular price
$199.99
Regular price
Unit price
per
|
Regular price
$239.99
Regular price
Unit price
per
|
Regular price
$179.99
Regular price
Unit price
per
|
|---|---|---|---|
| Name | M57 | M59AS | M18 |
| Best For | Classic breathable ergonomic support | Smaller spaces and flexible setups | Budget-friendly everyday comfort |
| Support Style | Straightforward and breathable | Compact and practical | Simple and cushioned |
| Key Differences | Mesh seat, 3D adjustable armrests | Mesh seat, 3D flip-up armrests | Foam seat, height-adjustable armrests |
| Seat Feel | Cooler breathable support | Cooler breathable support | Softer cushioned comfort |
| product weight | 44.8 lbs | 36.7 lbs | 37.1 lbs |
| assembly | Requires assembly | Requires assembly | Requires assembly |
| weight capacity | 330 lbs | 330 lbs | 330 lbs |
| guarantee | (3) years warranty | (3) years warranty | (3) years warranty |
| Choose It If… | You want breathable support with everyday adjustability | You need a chair that saves space and tucks away easily | You want an affordable ergonomic upgrade |
Find the Right Fit
Regular price
$199.99
Regular price
$299.99
Sale price
$199.99
Unit price
per
Regular price
$239.99
Regular price
$299.99
Sale price
$239.99
Unit price
per
Name
M57
Name
M59AS
Best For
Classic breathable ergonomic support
Best For
Smaller spaces and flexible setups
Support Style
Straightforward and breathable
Support Style
Compact and practical
Key Differences
Mesh seat, 3D adjustable armrests
Key Differences
Mesh seat, 3D flip-up armrests
Seat Feel
Cooler breathable support
Seat Feel
Cooler breathable support
product weight
44.8 lbs
product weight
36.7 lbs
assembly
Requires assembly
assembly
Requires assembly
weight capacity
330 lbs
weight capacity
330 lbs
guarantee
(3) years warranty
guarantee
(3) years warranty
Choose It If…
You want breathable support with everyday adjustability
Choose It If…
You need a chair that saves space and tucks away easily
Customer Reviews
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