SIHOO Doro S100 vs X-Chair X3

Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.

SIHOO

SIHOO Doro S100

$499.99 – $509.99

X-Chair

X-Chair X3

$979

$479.01

lower starting price for SIHOO Doro S100 than X-Chair X3 at the brand stores

Differences at a glance

SIHOO Doro S100X-Chair X3

Price: $499.99 – $509.99$979
Seat height: 46–54 cm17.69–22 in
Seat depth: 15.15–17.12 in (≈ 38.5-43.5 cm)16.75–19.25 in
Load capacity: 330 lb (≈ 150 kg)275 lb (125 kg)
Recline: Reclines up to 135°SciFloat Infinite Recline + Tilt Lock and Tension allows you to recline and lock into position or increase tension in your recline motion for more fluid movement.
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°4-Dimensional armrests come standard (up, down, side-to-side, front-to-back); option to upgrade to FS 360 rotational armrests; Armrest Height 5.875in - 8.875in
Headrest: Integrated headrest adjusts up or down; upper backrest in five levelsOptional add-on (standard configuration: No headrest; Headrest +$115)
Lumbar support: Dual dynamic lumbar supportDynamic Variable Lumbar (DVL)® Support; height adjustable backrest raises the DVL®
Warranty: 3 years5 years (all parts and materials); 15 years (non-moving metal components, chair frame)

Which is cheaper, the SIHOO Doro S100 or the X-Chair X3?

The SIHOO Doro S100 is cheaper to start: $499.99 versus $979 for the X-Chair X3 at the brand stores (Oct 2026).

Which has a higher weight capacity?

The SIHOO Doro S100, rated for 330 lb versus 275 lb for the X-Chair X3.

Which has a headrest?

Both: the SIHOO Doro S100 as standard and the X-Chair X3 as an option.