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SIHOO · Office Chairs

SIHOO Doro S100

SIHOO · Brand founded 2011 · Shenzhen, China

People who want SIHOO's split dual lumbar pads and an adjustable seat depth at about half the S300's list price.

$499.99 – $509.99

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

Summary

A SIHOO Doro mesh chair with two moving lumbar pads, 4D arms and a recline to 135°.

Best for

  • People who want lumbar support that moves with them; SIHOO uses two dynamic pads.
  • Users up to 330 lb, SIHOO's stated maximum load.
  • Those who want both a headrest and 4D armrests included.

Good to check first

  • Both colours showed as sold out at SIHOO's US store on our last check, so confirm stock.
  • Returns need the chair unused and in its original packaging, so keep the box until you are sure.

The trade-off

The Doro dual lumbar and 4D arms at a mid price, with few published dimensions.

Value check

Lists at $499.99 (Black) or $509.99 (White) at SIHOO's US store.

Price
$499.99 – $509.99
Load capacity
330 lb
Warranty
3 years

What SIHOO highlights

  • Dual dynamic lumbar

    Two lumbar pads move with your back. SIHOO says they keep lower-back support steady as you shift.

  • 4D armrests and headrest

    The armrests adjust in four directions, and the headrest has several adjustments.

  • Mesh and waterfall seat

    The back and seat use breathable mesh, and the seat has a sloped front edge.

  • 135° recline

    The back reclines up to 135°. SIHOO lists BIFMA and SGS certification.

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

Before you buy

Fit (official)

  • Rated to 330 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, Doro S100 ↗ (checked Oct 12, 2026) · SIHOO refund policy ↗ (checked Oct 11, 2026)

Check price on Amazon

Specs

Size and fit
Sizes
45–50 in
Recommended user height
Users from 5 feet (150 cm) to 6 feet 3 inches (190 cm)
Seat height
46–54 cm
Seat depth
15.15–17.12 in (38.5–43.5 cm)
Seat width
51 cm
Load capacity
330 lb (150 kg)
Adjustments
Recline
Reclines up to 135°
Arms
4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage)Up and down 2.76 in, forward and back 1.18 in, side to side, rotate 72°
Lumbar support
Dual dynamic lumbar support
Headrest
Integrated headrest adjusts up or down; upper backrest in five levels
Build and warranty
Warranty
3 years
Chair weight
49.13 lb (22.3 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 Doro S100 cost?

It costs $499.99 – $509.99 at the SIHOO US Official Store (Black $499.99, White $509.99 (both shown as sold out on 2026-10-08)), checked Oct 2026.

What is the SIHOO Doro S100's weight capacity?

It is rated for 330 lb for the Doro S100 (US official ), according to SIHOO's official specifications.

Does the SIHOO Doro S100 have a headrest?

Yes. The official specifications list: Integrated headrest adjusts up or down.

What sizes or versions of the SIHOO Doro S100 are there?

It comes in general Dimensions: 27"W x 30"D x 45"-50"H.

Where can I buy the SIHOO Doro S100?

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

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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