X-Chair X3 vs SIHOO Doro C300 Pro

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 Pro

$789.99 – $839.99

$189.01

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

Differences at a glance

X-Chair X3SIHOO Doro C300 Pro

Price: $979$789.99 – $839.99
Seat height: 17.69–22 in46–56.7 cm
Seat depth: 16.75–19.25 in16.81–17.76 in (≈ 42.7-45.1 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.Maximum recline angle of 135°
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 - 8.875in6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)
Headrest: Optional add-on (standard configuration: No headrest; Headrest +$115)Headrest adjusts up and down, back and forth, or rotates
Lumbar support: Dynamic Variable Lumbar (DVL)® Support; height adjustable backrest raises the DVL®Lumbar support automatically conforms to your spine (BM Tracking System)
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 Pro?

The SIHOO Doro C300 Pro is cheaper to start: $789.99 versus $979 for the X-Chair X3 at the brand stores (Sep 2026).

Which has a higher weight capacity?

The SIHOO Doro C300 Pro, 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 Pro as standard.