SIHOO M57 vs M18

What published reviews say about each, where the two differ, and who each one suits.

Summed up from 16 published reviews

SIHOO

M57

The SIHOO M57 delivers strong adjustability, airflow, and value, but armrest, fit, and assembly drawbacks keep it from feeling premium.

Best for: Budget-conscious shoppers wanting adjustable lumbar support and breathable mesh seating.
Skip it if: Plush padding, independent headrest movement, and tall-user fit are priorities.

PriceToday's price on AmazonView on Amazon

What reviewers say about the SIHOO M57

SIHOO

M18

The SIHOO M18 offers strong budget value, comfortable seating, and adjustable lumbar support, but armrest and caster limitations reduce its appeal.

Best for: Budget-conscious office workers wanting adjustable lumbar support and long-session comfort.
Skip it if: You need plush armrests, effortless controls, or smooth rolling on carpet.

PriceToday's price on AmazonView on Amazon

What reviewers say about the SIHOO M18

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Specs side by side

Spec	SIHOO M57	SIHOO M18
Style	Ergonomic	Ergonomic
Holds	330 lb	330 lb
Lumbar	Adjustable	Adjustable
Armrests	Adjustable	Adjustable
Headrest	Yes	Yes
Mesh	Yes	Yes
Footrest	No	No

Rows where the two differ come first.

What reviewers like, and what they don't

SIHOO M57

Extensive adjustments support personalized posture, including lumbar, headrest, arms, and recline. 2 3 4 6
Full mesh promotes airflow and reduces heat during longer sessions. 1 2 3 4
Supportive lumbar and back design suits many long workdays. 2 3 4 5
Strong price-to-performance value within the mid-range ergonomic chair market. 1 2 3 4
Assembly can be more involved or time-consuming than expected. 1 2 4 5
Armrests may feel narrow, rigid, or insufficiently padded. 1 2 3 6
Taller users may encounter seat height, depth, or width limits. 1 2 5 6
Independent headrest movement is limited, while lumbar support weakens when reclined. 6 8

SIHOO M18

Affordable pricing pairs well with useful ergonomic features 1 2 3 4
Adjustable lumbar support is a major strength for this price 1 2 3 4
Comfortable, breathable seating works well for extended sessions 1 2 3 4
Recline, headrest, and tilt settings accommodate different work positions 2 3 6 7
Stable, sturdy construction suits everyday office use 1 4 5 7
Armrests lack sideways movement and may feel hard 1 2 3 5
Some adjustment controls require noticeable effort 2 3 6
Casters can roll stiffly and collect dirt easily 2 5 6
Lumbar depth, headrest positioning, and seat shape may not suit everyone 4 8

Ranked in our guides

Guide	M57	M18
Best ergonomic office chairs	#9	–
Best office chairs for back pain	#1	#9

Sources

We don't test products ourselves. This page sums up 16 published reviews, read on October 21, 2026; each point above links to the reviews that make it.