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SIHOO · Office Chairs

SIHOO Doro C300

SIHOO · Brand founded 2011 · Shenzhen, China

Budget home office with a lumbar that follows your back and self-adjusting recline.

$559.99 – $569.99

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

Summary

A mid-priced SIHOO mesh chair with self-adjusting lumbar, sized for users up to 5'11".

Best for

  • People 5'0" to 5'11", SIHOO's stated height range (UK store).
  • Those who want lumbar support that follows them as they lean back.
  • Sitters who like a sloped waterfall seat edge.

Good to check first

  • Over 5'11"? SIHOO lists a taller height range for the C300 Pro models, so compare those too.
  • The recline locks at 110°, 120° and 130°, so it suits upright work more than lying back.
  • Returns need the chair unused and in its original packaging, so keep the box until you are sure.

The trade-off

A self-adjusting back below Pro prices, with a shorter stated height range.

Value check

Lists at $559.99 in the US, about $60 more than the C300 Pro V2.

Price
$559.99 – $569.99
Load capacity
330 lb
Warranty
3 years

What SIHOO highlights

  • Adaptive backrest

    The streamlined backrest aligns with your back and moves with you. SIHOO says it offers continuous support.

  • Self-adaptive lumbar

    The lumbar support adjusts automatically as you lean back. SIHOO says this keeps waist support steady without manual adjustment.

  • Adjustable headrest

    The headrest adjusts in height, depth and rotation and locks automatically. SIHOO says this gives a precise fit.

  • Waterfall seat

    The seat front slopes down. SIHOO says the shape spreads weight and reduces pressure on thighs and hips.

  • 4D armrests

    The cushioned arms move up and down, back and forth, and pivot up to 75°, and follow the recline.

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

What users say

What users love

  • All-day comfort

    Users praise how comfortable it stays through long work and gaming days.

    Many say it is a clear step up from the gaming or leather chair they replaced.

  • A back that feels better

    Several users say their back pain eased after switching from an older office or gaming chair.

  • A lumbar that moves with you

    Users love that the spring-loaded lumbar follows them as they lean in or recline, with nothing to set by hand.

  • Cool, breathable mesh

    Users in warm rooms like how the mesh seat and back keep air moving, and note that it stays taut.

  • Simple to put together

    Users praise clear instructions, labelled hardware with spares and the tools in the box; many were done within an hour.

  • Adjusts to many builds

    SIHOO's stated range is 5'0" to 5'11"; users up to about 6'3" also report a good fit.

  • Strong value

    Users often compare it with chairs costing about twice as much and feel it holds its own.

Most-mentioned topics

  1. 1. Overall satisfaction7 owners · 71% positive
  2. 2. Lumbar support4 owners · 75% positive
  3. 3. Armrests3 owners · 33% positive
  4. 4. Headrest2 owners · 0% positive

What users repeat

  • Most users are pleased with the self-adjusting lumbar.
  • The free-moving armrests are the most common irritation.

Good to know

  • Tip: the arms swivel freely, so set the angle you like and expect them to move if you bump them.
  • Tip: the chair is heavy and the stock casters feel stiff to some; several users fitted rubber rollerblade-style wheels.
  • Tip: there is no seat-depth or recline-tension adjustment, so check the official seat dimensions against your build.
  • Tip: if a step in the manual is unclear, the assembly video helps; one user left the seat-back screws loose until the arms lined up.
  • Tip: if a part arrives damaged or wears early, contact SIHOO support; users report quick replacements.

Summarised in our own words from 9 user reports in online user discussions (2026). Each user is counted once; sale and promotional posts, repeats and other models are left out.

More details →

Who it suits, who it doesn't

  • Less suited to short-thighed users: An user at 165 cm found the seat too deep after a trial.

Where users disagree

  • Armrests

    One side: Some users find the free-moving armrests fine in daily use.

    Other side: Others find them so loose they shift with any bump.

Topic notes

  • Overall satisfaction: Most users are happy with it; two find it basic or disappointing.
  • Lumbar support: The self-adjusting lumbar is praised; one user dislikes that headrest and lumbar height move together.
  • Armrests: They move very easily; one user finds them too sensitive, another says they sit too high for a low desk.
  • Headrest: Hard to position for some: tied to lumbar height, or pressing on the shoulders when brought forward.

After long-term use

After 2.5 years

One user reports about two and a half years at roughly ten hours a day: the base, casters and armrest padding still hold up; the tilt lock failed once and was replaced by the seller within about a week.

Only users describing six months or more of use.

Before you buy

Fit (official)

  • Recommended user height 150–180 cm (5'0"–5'11"), UK store.
  • Rated to 330 lb (US store); UK store lists 300 lb (136 kg).
  • Seat height 47–55 cm (18.5–21.7 in), UK store.

Delivery and setup

  • Net weight 50.93 lb (US store).

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

  • One user says the armrests stay fairly high even at their lowest; check your desk height if you push the chair under it.

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

Check price on Amazon

Specs

Size and fit
Sizes
42–49 in
Recommended user height
150–180 cm
Seat height
47–55 cm
Seat depth
43.5–46 cm
Seat width
49.5 cm
Back height
18.11–21.65 in (46–55 cm)
Load capacity
330 lb (150 kg)
Adjustments
Recline
: 110°, 120°, 130°
Arms
4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage)
Lumbar support
Self-adaptive dynamic lumbar support
Headrest
3D Mechanical Headrest
Build and warranty
Warranty
3 years
Chair weight
23.20 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 Doro C300 cost?

It costs $559.99 – $569.99 at the SIHOO US Official Store (Standard Version (Black $559.99, White $569.99); Footrest Version $609.99-$619.99 excluded), checked Oct 2026.

What is the SIHOO Doro C300's weight capacity?

It is rated for 330 lb for the Doro C300 (US official ), according to SIHOO's official specifications.

Does the SIHOO Doro C300 have a headrest?

Yes. The official specifications list: 3D Mechanical Headrest.

What sizes or versions of the SIHOO Doro C300 are there?

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

Where can I buy the SIHOO Doro C300?

You can buy it from Amazon or the SIHOO US Official Store. Check the configuration, price and return terms before ordering.

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Where to buy

Amazon returns are typically 30 days of delivery but set per listing — check before ordering. Some links are affiliate links; Chairpedia may earn a commission at no extra cost to you (disclosure).

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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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