X-Chair X3 vs SIHOO Doro C300

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

X-Chair

X-Chair X3

$979

SIHOO

SIHOO Doro C300

$559.99 – $569.99

$419.01

lower starting price for SIHOO Doro C300 than X-Chair X3 at the brand stores

Differences at a glance

X-Chair X3SIHOO Doro C300

Price: $979$559.99 – $569.99
Seat height: 17.69–22 in47–55 cm
Seat depth: 16.75–19.25 in43.5–46 cm
Load capacity: 275 lb (125 kg)330 lb (≈ 150 kg)
Recline: 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.Recline Angles: 110°, 120°, 130°
Arms: 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 - 8.875in4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage)
Headrest: Optional add-on (standard configuration: No headrest; Headrest +$115)3D Mechanical Headrest
Lumbar support: Dynamic Variable Lumbar (DVL)® Support; height adjustable backrest raises the DVL®Self-adaptive dynamic lumbar support
Warranty: 5 years (all parts and materials); 15 years (non-moving metal components, chair frame)3 years

Which is cheaper, the X-Chair X3 or the SIHOO Doro C300?

The SIHOO Doro C300 is cheaper to start: $559.99 versus $979 for the X-Chair X3 at the brand stores (Sep 2026).

Which has a higher weight capacity?

The SIHOO Doro C300, rated for 330 lb versus 275 lb for the X-Chair X3.

Which has a headrest?

Both: the X-Chair X3 as an option and the SIHOO Doro C300 as standard.

What do owners mention most?

Comfort for the X-Chair X3, and adjustability for the SIHOO Doro C300, based on review summaries.