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SIHOO

SIHOO M57 Ergonomic Mesh Office Chair, High Back Home Desk Chair with 3D Armrests, Lumbar Support and Adjustable Headrest, Comfortable Computer Chair, Big & Tall Office Chair Hold 330 LBS-Black

Excellent

Mesh back
3D arms
Adjustable lumbar
Headrest
330 lb capacity

$199.99~~$239.88~~

You save $39.89 off the list price

In stock on Amazon.com

Specs verified August 2026

Amazon.com data updated October 13, 2026, 2:34 pm ET. Price and availability are accurate as of the time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply.

Ergo Score Breakdown

Ergo Score: 67/100

Adjustability 22/40

Armrests8/103D armrests: 8/10

Seat height4/6adjustable, 3.5 in range: 4/6

Seat depth0/5Not listed by the seller

Lumbar adjustment5/7lumbar adjustments: 5/7

Recline2/2recline to 126 degrees: 2/2

Tilt lock3/3tilt lock: 3/3

Tilt tension0/3Not listed by the seller

Advanced tilt0/4Not listed by the seller

Support 25/30

Lumbar support12/12lumbar support: 12/12

Upper back support4/4headrest: 4/4

Headrest adjustment2/2headrest adjustment: 2/2

Cushion0/5Not listed by the seller

Seat edge3/3waterfall edge: 3/3

Breathable back4/4mesh back: 4/4

Build 20/30

Warranty3/93-year warranty: 3/9

Weight capacity6/6330 lb capacity: 6/6

Certifications5/5BIFMA, SGS: 5/5

Base3/3aluminum base: 3/3

Gas lift0/2Not listed by the seller

Owner rating3/54.3 stars from 8093 reviews: 3/5

Comfort Index

Comfort Index: 58/100

Seat cushionNot listed by the seller

Cushion thicknessNot listed by the seller

Recline10/15

Breathable back15/15

Headrest10/10

Armrests10/10

Owner rating13/25

Specifications

Seat height range	18.1 to 21.7 in
Seat width	20.08 in
Seat depth	18.11 in
Seat depth adjustable	Not listed by the seller
Seat cushion	Not listed by the seller
Cushion thickness	Not listed by the seller
Back material	Mesh
Backrest height	Not listed by the seller
Backrest width	Not listed by the seller
Armrests	3D adjustable
Lumbar support	2D
Lumbar adjustments	Height, depth
Headrest	Yes
Max recline	126 degrees
Tilt mechanism	Not listed by the seller
Base material	Aluminum
Casters	Standard
Gas lift	Not listed by the seller
Weight capacity	330 lb
Chair weight	Not listed by the seller
Overall height	42.12 to 48.42 in
Warranty	3 years
Certifications	BIFMA, SGS

Fit Guide

A comfortable seat height is about a quarter of your body height. Here is how this chair's listed seat range lines up (how we rate).

Your height	Seat range	Fit	Weight
4'11" to 5'3"	18.1 to 21.7 in seat (ideal about 15.3 in)	Seat may be too high	Rated to 330 lb
5'4" to 5'7"	18.1 to 21.7 in seat (ideal about 16.4 in)	Seat may be too high	Rated to 330 lb
5'8" to 5'11"	18.1 to 21.7 in seat (ideal about 17.4 in)	Seat may be too high	Rated to 330 lb
6'0" to 6'3"	18.1 to 21.7 in seat (ideal about 18.4 in)	Good fit	Rated to 330 lb
6'4" and up	18.1 to 21.7 in seat (ideal about 19.3 in)	Good fit	Rated to 330 lb

Mesh back3D armrestsAdjustable lumbarAdjustable headrestBIFMA certified

What We Like

It has the highest Ergo Score in its category, helped by a lumbar support that adjusts in height and depth and a headrest that adjusts in height and angle.
With 8,093 reviews averaging 4.3, it is among the most widely reviewed chairs in its category, so there is plenty of owner feedback to read.
The back is mesh, the seat edge is a waterfall curve and the base is aluminum, and the listing names BIFMA and SGS certifications.

Watch Out For

Coverage is a 3-year warranty, and the only extra the listing mentions is free replacement parts if needed.
The armrests are listed as 3D, a step short of the four-way adjustable arms some rivals offer.
The listing does not state the chair weight, the tilt mechanism or whether the seat depth adjusts.

At a Glance

Highest Ergo Score in its category, 8,093 reviews and a 4.3 average: the M57 is a mesh chair with 3D armrests, adjustable lumbar and headrest, a 126 degree recline, a 330 lb rating and a 3-year warranty.

Who This Chair Is For

Shoppers who want a large pool of owner reviews behind the chair: 8,093 of them.
Sitters who want separate control over the lower back and the neck.

Who Should Look Elsewhere

Anyone who wants a long warranty, since coverage here is 3 years.
Buyers who want to confirm the tilt mechanism, which the listing does not state.

How the M57 splits back, neck and arm adjustment

The lumbar support adjusts in height and depth, the headrest adjusts in height and angle, and the armrests are listed as 3D. The backrest reclines up to 126 degrees. The listing does not state a tilt mechanism, a tilt tension control or a seat depth adjustment, so how the backrest locks and whether the seat slides are unconfirmed.