SIHOO M57 Ergonomic Mesh Office Chair, 330 lb, Black

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Product guide

SIHOO M57 Ergonomic Mesh Office Chair, 330 lb, Black

Ergonomic: The SIHOO M57 is a black high-back mesh office chair with adjustable headrest and lumbar support, three-dimensional armrests and tilt settings. Its listed load rating is 330 lb, while customer feedback is divided on lumbar positioning and recline feel.

At a glance

Mesh seat and back are described as breathable, with an adjustable headrest and lumbar support.
Manufacturer feature copy describes three-position recline at 110°–116°–126° and 10 cm of height adjustment.
The armrests are described as adjustable for height, forward and backward movement, and rotation.
The listing gives a maximum weight recommendation of 149.69 kg and separately claims a 330 lb capacity.

Price

£216.84Save 6%

Reference price: ~~£229.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Multiple adjustment points let buyers alter the headrest, lumbar support, armrests and recline rather than relying on a fixed seating position.
Mesh at the seat and back may suit buyers who prefer an airy chair surface.
The supplied manufacturer description says assembly instructions are included.

Technical specifications

25 specifications

Identity
Brand	SIHOO
Model	M57

Dimensions and installation
Form factor	Desk Chair
Dimensions listed	43 x 61 x 110 centimetres
Weight listed	18.9 Kilograms

Materials and protection
Material listed	Plastic
Seat and back	Fabric mesh
Frame	Aluminium
Maximum weight recommendation	149.69 Kilograms

Adjustments and construction
Listed special features	Adjustable headrest/lumbar support, Ergonomic, Seat cushion with shaped cotton + Breathable mesh, Seat height: 45~55cm, Sitting depth:46CM
Recline positions	3
Tilt	Yes
Armrest adjustability	Height (1D/Vertical)
Back style	High Back
Seat back interior height	68 Centimetres
Seat height	43.5 Centimetres
Seat depth	50 centimetres
Arm height	7 Centimetres
Chair backrest width	10 Centimetres

Use and care
Recommended use	Office
Indoor/outdoor use	Indoor
Surface recommendation	Hard Floor
Care instructions	Wipe Clean
Assembly instructions	Assembly instructions included
Manufacturer warranty description	3 year limited warranty.

What to know before buying

Customer feedback says lumbar support works well for some people but sits too low for others, and some find the chair reclines too far. Consider whether the adjustment range suits your posture and preferred sitting angle.

Listing details to confirm

The listed maximum weight recommendation is 149.69 Kilograms, while feature copy and the title claim 330 lb. These capacity figures are not stated identically, so confirm the applicable rating for the selected listing. The chair's tilt positions and height adjustment are manufacturer claims, not independent measurements.

What’s in the box

Included

Caster

Who is it for?

A good fit for

Home-office and office users who want a mesh chair with adjustable headrest, lumbar support, armrests and tilt.
Buyers who prefer a high-back chair and are willing to check how the lumbar position and recline feel for their body.

Less suited to

Buyers who need confirmed fit for a specific body shape or fixed lumbar positioning without trying the adjustments.
Buyers looking for a chair whose long-term durability is assured. Customer feedback includes reports of breakage within nine months.

SIHOO M57 Ergonomic Mesh Office Chair, 330 lb, Black · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 5,930 ratings

5 stars64%64%
4 stars20%20%
3 stars6%6%
2 stars3%3%
1 star7%7%

Customer feedback highlights comfort, perceived quality and straightforward assembly, including reports of setup taking about 20 minutes. Opinions are mixed on lumbar support, adjustability and ergonomics: some appreciate the support and adjustments, while others find the lumbar too low or the chair leans too far back. Some also report breakage within nine months. Those differences matter because this chair relies on adjustable lumbar and tilt settings for fit, and feedback does not establish consistent long-term durability.

Positive themes

Customers describe the chair as comfortable and good quality.
Customers report that assembly is easy.

Negative themes

Some customers report that the chair broke within nine months.

Mixed feedback

Lumbar support is helpful for some, but others find it too low.
Feedback differs on adjustability and ergonomics, including reports that the chair leans too far back.

Frequently asked questions

What adjustments does the SIHOO M57 offer?

The listing describes an adjustable headrest and lumbar support, armrests that adjust in height and can move forward or backward and rotate, plus three tilt positions. Buyer feedback differs on how well the lumbar position and recline suit them.

What is the chair's weight capacity?

The title and feature copy claim 330 lb, while the technical details give a maximum weight recommendation of 149.69 Kilograms. Because the listing does not present these identically, confirm the applicable rating before buying.

Is the chair made with mesh?

The listing identifies fabric mesh for the seat and describes mesh at the back. It also lists Plastic as the material and Aluminium as the frame material.

Does it require assembly?

Yes. The listing says assembly is required and that instructions are included. Customer feedback describes assembly as easy, with setup taking about 20 minutes.