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SIHOO · Office Chairs

SIHOO Doro C300 Pro

SIHOO · Brand founded 2011 · Shenzhen, China

Long desk days for people who want seat-depth adjustment and 6D arms on a mesh chair with automatic lumbar.

$789.99 – $839.99

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

Summary

SIHOO's earlier flagship with self-adjusting lumbar; the newer V2 now lists for less.

Best for

  • People 5'0" to 6'3", SIHOO's stated height range.
  • Larger sitters who want a roomy seat with depth adjustment.
  • Those who want lumbar support that adjusts itself instead of by hand.

Good to check first

  • Compare it with the C300 Pro V2, which lists for less with newer features.
  • SIHOO's stated height range tops out at 6'3"; check it if you are taller.
  • Returns need the chair unused and in its original packaging, so keep the box until you are sure.

The trade-off

Automatic lumbar and 6D arms, at a higher list price than its successor.

Value check

Lists at $789.99 in the US, about $290 more than the C300 Pro V2.

Price
$789.99 – $839.99
Load capacity
330 lb
Warranty
3 years

What SIHOO highlights

  • Dynamic lumbar support

    The lumbar support adjusts to your spine automatically. SIHOO says it gives continuous back comfort without manual tweaks.

  • Spacious seat

    The seat is larger and slides for depth. SIHOO says it offers room for bigger sitters and a better fit.

  • 6D armrests

    The arms move up and down, back and forth, in and out, rotate, and follow the recline. SIHOO calls this six-direction adjustment.

  • Flexible backrest

    The streamlined backrest flexes as you move. SIHOO says it keeps supporting you as you shift positions.

  • Breathable mesh

    The seat and back are elastic mesh. SIHOO describes it as soft, durable and easy to clean.

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

What users say

What users love

  • Footrest lounging

    C300 Pro users like stretching out with the footrest and a deep recline for a break.

  • Arms that adjust every way

    C300 Pro users call the armrests some of the most adjustable they have used.

  • Mesh that holds its shape

    A C300 Pro user reports no sag in the mesh after about two and a half years.

  • Back support that sits right

    A C300 Pro user says the lower-back plate lands in the right spot and the seat shape nudges them to sit upright.

Across the Doro C300 family

Shared reviews for the Doro C300 and C300 Pro; praise not tied to one model.

  • All-day comfort

    Across the Doro C300 family, users praise comfort that holds up through long work and gaming days.

  • A lumbar that follows you

    Users like a spring-loaded lumbar that moves with their back as they lean or recline.

  • Cool mesh

    Users in warm rooms say the mesh seat and back keep air moving.

  • Well packed, easy to build

    Users mention labelled hardware with spares, the tools in the box and an assembly video.

  • Strong value

    Users often compare it favourably with chairs costing far more.

Not enough user data yet for the SIHOO Doro C300 Pro. We add user reports as they appear.

After long-term use

Not enough long-term user data yet.

Before you buy

Fit (official)

  • Designed for users 5'0"–6'3".
  • Rated to 330 lb (US store); EU and UK stores list 300 lb (136 kg).
  • Seat height 46–56.7 cm (18.1–22.3 in), EU store.

Delivery and setup

  • Net weight 55.34 lb.

Returns (official policy)

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

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

Check price on Amazon

Specs

Size and fit
Sizes
45–51 in
Recommended user height
Designed to fit users from 5' to 6'3"
Seat height
46–56.7 cm
Seat depth
16.81–17.76 in (42.7–45.1 cm)
Seat width
20.28 in (51.5 cm)
Load capacity
330 lb (150 kg)
Adjustments
Recline
Maximum recline angle of 135°
Arms
6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)
Lumbar support
Lumbar support automatically conforms to your spine (BM Tracking System)
Headrest
Headrest adjusts up and down, back and forth, or rotates
Build and warranty
Warranty
3 years
Chair weight
55.34 lb (25.1 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 cost?

It costs $789.99 – $839.99 at the SIHOO US Official Store (Standard Version (Black $789.99, White $799.99) and Footrest Version (Black $829.99, White $839.99)), checked Oct 2026.

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

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

Does the SIHOO Doro C300 Pro have a headrest?

Yes. The official specifications list: Headrest adjusts up and down, back and forth, or rotates.

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

It comes in general Dimensions: 28"W x 28"D x 45"-51"H.

Where can I buy the SIHOO Doro C300 Pro?

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

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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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