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SIHOO · Office Chairs

SIHOO Doro C300 Pro V2

SIHOO · Brand founded 2011 · Shenzhen, China

People who want a mesh chair with a lumbar pad they can set (3 levels), 8D arms and a height-adjustable backrest at a lower list price than the C300 Pro.

$499.99 – $549.99

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

Summary

Video reviewers like its moving back and wide arm range; user evidence is still early.

Best for

  • People who switch between upright work and reclining through the day.
  • Heights within SIHOO's stated 4'11" to 6'3" range.
  • Buyers who want many armrest adjustments at about $500.
  • Shared desks, since the back adapts without much re-setting.

Good to check first

  • Set the armrests where you want them; reviewers say they shift when pushed and do not lock, so avoid using them to stand up.
  • There is no fully locked upright back or recline tension control; it suits people who like a back that moves.
  • Near either end of the height range? Reviewers mention seat height limits, and SIHOO does not list a seat height.
  • Returns need the chair unused and in its original packaging, so keep the box until you are sure.

The trade-off

Lots of automatic movement, but arms and recline lock less firmly than some reviewers wanted.

Most reviewers received the chair from SIHOO, and none describes six months of use yet.

Value check

Lists at $499.99 in the US, under a third of the Aeron's starting price.

Price
$499.99 – $549.99
Load capacity
330 lb
Warranty
3 years

What SIHOO highlights

  • DynaCore synchronized movement

    DynaCore links the headrest, backrest, lumbar support and armrests. They move together as you change positions. SIHOO presents this as full-body adaptive support.

  • SyncroFlex Back-Glide

    The backrest glides with your back as you lean and recline. SIHOO says this keeps your back supported.

  • Domino 2.0 lumbar support

    The lumbar pad covers a larger area, from the lower back down to the sacrum. It moves up or down and has three support levels. SIHOO says the larger area gives a wrapped-in feel.

  • 8D armrests

    The armrests move up, down, forward and back, and also rotate and tilt. SIHOO says they adapt to the way you sit, work and play.

  • Ultra-wide 3D headrest

    The headrest is 28% wider than before and adjusts in three directions. SIHOO says this gives your head and neck more room to rest.

  • Weight-responsive recline

    Recline resistance responds to your weight, and the back locks at 105°, 120° or 135°. SIHOO says every recline stays smooth and controlled.

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

What users say

What users love

  • Comfort that lasts the day

    Users say hours go by without fatigue, and several call it the most comfortable chair they have owned.

  • A back that feels better

    Users say their back pain eased after switching, and one with a long-standing back issue says long sessions feel easier in it.

  • A back and lumbar that move with you

    Users praise a lumbar and backrest that follow them as they lean in or recline.

  • Plenty to adjust

    Users like fine-tuning the arms, headrest, seat slide and lumbar level to their body.

  • Cool mesh, solid build

    Users say the mesh stays cool in warm weather and the chair feels sturdy and well made.

  • Quick help with parts

    Users report same-day replies and replacement parts sent quickly.

Most-mentioned topics

  1. 1. Overall satisfaction11 owners · 45% positive
  2. 2. Armrests10 owners · 10% positive
  3. 3. Lumbar and back support4 owners · 50% positive
  4. 4. Returns and support4 owners · 25% positive
  5. 5. Height fit4 owners · 50% positive
  6. 6. Recline3 owners · 67% positive
  7. 7. Build quality3 owners · 0% positive

What users repeat

  • Armrests are the most raised issue: they move too easily, and several arrived stuck or misaligned.
  • Users who like it praise the dynamic lumbar and a recline that follows their weight.
  • Several users found a return hard to arrange because the chair had to be taken apart and repacked.

Good to know

  • Tip: the armrests do not lock, so set them and avoid using them to push yourself up; this is the most common complaint.
  • Tip: test every armrest adjustment right after assembly; a few users found one stuck at first.
  • Tip: the headrest has no lock; find a position that does not click back when you recline.
  • Tip: check the seat height range if you use a high desk; some users found it sits low.
  • Tip: the box is big and heavy, and a return means repacking it, so keep the packaging until you are sure.

Summarised in our own words from 15 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

  • Suits tall users: Two users around 190 cm say the seat, back and headrest adjust far enough for them.
  • Less suited to high desks: Two users say the seat stays low even at its top setting.

Where users disagree

  • Overall satisfaction

    One side: Some users find it very comfortable and like the dynamic back and recline.

    Other side: Others found it uncomfortable within days and returned it.

  • Armrests

    One side: One user says the arms hold their position fine.

    Other side: Most users who mention them say they shift with a light bump or when moving the chair.

Detailed topics

  • Armrest stuck after assembly · 4 users
    What users did: One user opened the armrest pad, freed the small ratchet part under the metal plate and it worked again; others contacted support.
  • Arms move too easily · 3 users
    What users did: No fix reported; users set the position and avoid leaning on the arms.
  • Return hard to arrange · 3 users
    What users did: Users say the chair had to be taken apart and repacked; one disputed the charge instead.

Topic notes

  • Overall satisfaction: Users are split: some call it the most comfortable chair they have owned, others returned it or disputed the charge.
  • Armrests: The most raised issue: the arms move too easily, and several arrived stuck in one position or misaligned.
  • Lumbar and back support: Two users praise the dynamic lumbar; two say it pressed into them or stayed uncomfortable.
  • Returns and support: One user had parts replaced quickly; three describe slow email replies or a return that needed the chair taken apart and repacked.
  • Height fit: Two users around 190 cm say it fits; two others say the seat sits too low even at its top setting.
  • Recline: The recline follows body weight and suits users who leave it unlocked; one user could not get it to recline.
  • Build quality: Rough plastic edges, a base that feels thinner than expected, and parts that did not line up during assembly.

After long-term use

Not enough long-term user data yet.

Before you buy

Fit (official)

  • Designed for users 4'11"–6'3" (150–190 cm).
  • Rated to 330 lb (150 kg).

Delivery and setup

  • SIHOO does not state an assembly time on the product page.
  • Net weight 59.64 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

  • Several users found an armrest stuck right after assembly: test every adjustment before you discard the box.
  • Users say a return means taking the chair apart and repacking it, so keep the original packaging until you are sure.

Sources: SIHOO US official store ↗ (checked Oct 9, 2026) · SIHOO refund policy ↗ (checked Oct 9, 2026)

Check price on Amazon

Specs

Size and fit
Recommended user height
4'11"–6'3" (150–190 cm)
Seat height
17.5–20.9 in
Seat depth
16.9–18.5 in (43–47 cm)
Seat width
20.5 in (52 cm)
Back height
20.5–23.6 in (52–60 cm)
Load capacity
330 lb (150 kg)
Adjustments
Recline
105°, 120°, 135°
Arms
8D Bionic Armrests (up, down, forward, back, rotate, or tilt)
Lumbar support
Domino™ Sacral-Lumbar Support 2.0: moves up or down, 3 support levels
Headrest
Ultra-wide 3D headrest, adjusts in three directions
Build and warranty
Warranty
3 years (covers manufacturing defects)
Chair weight
59.64 lb (27.1 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 Pro V2 cost?

It costs $499.99 – $549.99 at the SIHOO US Official Store (Standard Version (Black $499.99, White $509.99) and Footrest Version (Black $539.99, White $549.99)), checked Oct 2026.

What is the SIHOO Doro C300 Pro V2's weight capacity?

It is rated for 330 lb for the Doro C300 Pro V2 (US official specifications; UK : up to 150 kg), according to SIHOO's official specifications.

Does the SIHOO Doro C300 Pro V2 have a headrest?

Yes. The official specifications list: Ultra-wide 3D headrest, adjusts in three directions.

Where can I buy the SIHOO Doro C300 Pro V2?

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

Videos

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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