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SIHOO · Office Chairs

SIHOO M57

SIHOO · Brand founded 2011 · Shenzhen, China

People who want a budget all-mesh chair with an adjustable lumbar pad, an adjustable headrest and 3D arms.

$319.99

  • Up to 330 lb
  • 3-year warranty
Check price on Amazon
Check price at SIHOO ↗

From 31 user reviews

Summary

SIHOO's long-running budget mesh chair with hand-set lumbar and a 126° recline.

Best for

  • Budget buyers who want a full-mesh seat and back.
  • People up to about 6'1" (185 cm), per SIHOO's German store.
  • Those who prefer setting lumbar height and depth by hand.

Good to check first

  • The recline stops at 126°, so look at a deeper-reclining model if you like to nap in your chair.
  • The arms adjust in three directions, not four.
  • Returns need the chair unused and in its original packaging, so keep the box until you are sure.

The trade-off

A simple, proven layout at a low price, with fewer adjustments than newer SIHOO models.

Value check

Lists at $319.99 in the US, about $180 less than the C300 Pro V2.

Price
$319.99
Load capacity
330 lb
Warranty
3 years

From 31 user reviews · updated Oct 10, 2026

What SIHOO highlights

  • Full mesh design

    The seat and back are mesh. SIHOO says the breathable design keeps you cool.

  • Dual-adjustable lumbar

    The lumbar support moves vertically and horizontally. SIHOO says this lets you set it to your back.

  • 3D armrests

    The arms move up and down, back and forth, and rotate.

  • Contoured backrest

    The backrest follows the spine's curve. SIHOO says it keeps a natural S-shape.

  • 126° recline

    The back reclines up to 126°, and the headrest adjusts up to 3.9 in and rotates 45°. SIHOO presents this as room to take a break.

As described by SIHOO on its official pages; not a Chairpedia assessment.

What users say

What users love

  • Built to last

    Users describe two to six years of daily use with the mesh still holding its shape.

  • Breathable mesh

    Users in hot, humid rooms like that the mesh seat and back stay cool.

  • Solid, stable frame

    Users call the chair solid and sturdy, even after years of daily use.

  • Easy recline

    Users like the smooth, springy recline.

  • Help when parts fail

    Users who needed a replacement part say it was sorted through the warranty or a local distributor.

Across SIHOO's mesh lineup

Shared reviews for the M57, M18 and B100 Pro; praise not tied to one model.

  • Comfortable desk hours

    Across SIHOO's mesh lineup, users praise chairs that stay comfortable through long work and gaming days.

  • Cooler than leather

    Users moving from leather or gaming chairs say the mesh back keeps them noticeably cooler.

  • Sturdy for the price

    Users call the frames solid and well made, and often say the chair beats others in its price range.

  • Straightforward setup

    Users say assembly takes well under an hour with labelled parts.

  • Quick replacement parts

    Users report missing or damaged parts sent within about a week.

Most-mentioned topics

  1. 1. Durability over years15 owners · 67% positive
  2. 2. Lumbar support10 owners · 10% positive
  3. 3. Height fit7 owners · 29% positive
  4. 4. Seat comfort6 owners · 50% positive
  5. 5. Recline3 owners · 67% positive
  6. 6. Armrests3 owners · 0% positive
  7. 7. Cleaning3 owners · 0% positive
  8. 8. Warranty help3 owners · 100% positive

What users repeat

  • Users report two to six years of daily use with the mesh still holding its shape.
  • The fixed lumbar plate is the most common complaint; many set it to the lowest, shallowest position or remove it.
  • Shorter users say the seat can sit high or run long, so check seat height and depth first.

Good to know

  • Tip: set the lumbar plate to its lowest, shallowest position first; some users prefer it that way, and a few remove it.
  • Tip: under about 5'4"? Check the official seat height range, or plan for a footrest.
  • Tip: wipe or vacuum under the mesh seat now and then; dust collects there.
  • Tip: retighten the backrest bolts if you notice play after a few years.

Summarised in our own words from 31 user reports in online user discussions (2022–2026). Each user is counted once; sale and promotional posts, repeats and other models are left out.

Inside 31 user reviews →

Who it suits, who it doesn't

  • Suits average builds: Users around 5'3" to 5'8" describe years of daily use without major issues.
  • Less suited to shorter users: Users near 5'4" or under say their feet barely touch the floor or the seat runs long.
  • Less suited to tall users: An user at 187 cm says the upper rim of the backrest pressed into them and the headrest sat awkwardly.

Where users disagree

  • Lumbar support

    One side: A few users find it comfortable, especially set to the lowest, furthest-back position.

    Other side: Most users who mention it find the plate hard-edged or pushing too far forward, even on the lowest setting.

  • Rolling

    One side: One user says theirs moves easily.

    Other side: Another finds the chair heavy and hard to turn on its casters.

Detailed topics

  • Lumbar plate too firm or prominent · 9 users
    What users did: Set it to the lowest, shallowest position, add a cushion, or remove the plate; users who removed it say comfort improved.
  • Part failure after a year or more · 5 users
    What users did: Reported failures: a cracked or snapped base, a tilt lock that no longer holds upright, a broken lumbar knob. Users used the warranty or a spare base.
  • Feet not reaching the floor · 3 users
    What users did: A footrest under the desk.
  • Dust under the mesh · 3 users
    What users did: Vacuum and wipe under the seat regularly; one user re-greases the swivel.

Topic notes

  • Durability over years: Most long-term users say the mesh and frame still hold up after two to six years; five describe a part failing after a year or more.
  • Lumbar support: The fixed lumbar plate is the most common complaint: users call it too firm or too prominent, and some take it out.
  • Height fit: Users near 5'4" or shorter describe feet barely reaching the floor or a long seat; one user at 187 cm says the backrest top and headrest sat in the wrong place.
  • Seat comfort: Some find the mesh seat comfortable for years; others find it firm under the thighs over long days.
  • Recline: The recline spring is liked; one user wanted it to lean back further.
  • Armrests: Armrests set too wide for a smaller frame, or developing wobble or play over time.
  • Cleaning: Dust and grime collect under the mesh seat; deep cleaning takes effort.
  • Warranty help: Three users say a broken part was replaced through the warranty or a local distributor.

After long-term use

After 2–6 years

Fifteen users describe a year or more of use. Most say the mesh has not torn or sagged much and the chair still feels solid. Problems that do appear at this stage: backrest bolts loosening (retightened), a cracked or snapped base, a tilt lock that stops holding upright, a worn lumbar knob and armrests that develop play.

Only users describing six months or more of use.

Before you buy

Fit (official)

  • Recommended user height up to 185 cm (about 6'1"), German store.
  • Rated to 330 lb.
  • Seat height 46–55 cm (18.1–21.7 in), German store.

Delivery and setup

  • Net weight 44.8 lb.

Returns (official policy)

  • SIHOO store: 30-day returns from delivery, return shipping free.
  • The chair must be unused and in its original packaging.

Users suggest checking

  • Users under about 5'4" report feet barely reaching the floor: compare the official seat height range with your lower-leg length.
  • The lumbar plate is fixed in shape; if you are sensitive to lumbar pressure, check the return terms before buying.

Sources: SIHOO US official store ↗ (checked Oct 10, 2026) · SIHOO refund policy ↗ (checked Oct 10, 2026) · SIHOO German official store ↗ (checked Oct 10, 2026)

Check price on Amazon

Specs

Size and fit
Sizes
42–49 in
Recommended user height
185 cm
Seat height
46–55 cm (18.1–21.7 in)
Seat depth
18.11 in (46 cm)
Seat width
51 cm (≈ 20.1 in)
Load capacity
330 lb (150 kg)
Adjustments
Recline
Reclines up to 126°
Arms
3D coordinated armrests (up and down, left and right, forward and backward)
Lumbar support
Dual-adjustable lumbar support (vertical and horizontal)
Headrest
Headrest adjusts vertically up to 3.9 inches and rotates 45 degrees
Build and warranty
Warranty
3 years
Chair weight
44.8 lb (20.3 kg)
Made in
China (Foshan); SIHOO states this for all its products

About SIHOO

Founded
2011
Based in
Shenzhen, China
Manufacturing
Foshan, China

SIHOO launched its brand in 2011 and opened an ergonomics museum in 2012. It set up dedicated research facilities in 2016, according to its own timeline.

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Questions

How much does the SIHOO M57 cost?

It costs $319.99 at the SIHOO US Official Store (Black, Gray and White $319.99 (list = the store's compare-at price; on 2026-10-09 the store showed $239.99)), checked Oct 2026.

What is the SIHOO M57's weight capacity?

It is rated for 330 lb for the M57 (US official specifications), according to SIHOO's official specifications.

Does the SIHOO M57 have a headrest?

Yes. The official specifications list: Headrest adjusts vertically up to 3.9 inches and rotates 45 degrees.

What sizes or versions of the SIHOO M57 are there?

It comes in general Dimensions: 28"W x 28"D x 42"-49"H.

Where can I buy the SIHOO M57?

You can buy it from Amazon, the SIHOO US Official Store or Amazon (2-pack, Black). Check the configuration, price and return terms before ordering.

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Where to buy

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Specs and prices come from the brand sources listed under Specs and next to the price; User Insights link to their originals. Confirm the exact configuration, seller and price before buying. Editorial policy

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