X-Chair X3 vs SIHOO B300 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 B300 Pro

$329.99 – $379.99

$649.01

lower starting price for SIHOO B300 Pro than X-Chair X3 at the brand stores

Differences at a glance

X-Chair X3SIHOO B300 Pro

Price: $979$329.99 – $379.99
Seat height: 17.69–22 in46.8–55.3 cm
Seat depth: 16.75–19.25 in16.5–18.5 in (≈ 42-47 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.Three lockable recline angles: 105°, 120°, 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 All-Around Armrests (rotate, adjust, flip up)
Headrest: Optional add-on (standard configuration: No headrest; Headrest +$115)3D Ultra-Wide Headrest
Lumbar support: Dynamic Variable Lumbar (DVL)® Support; height adjustable backrest raises the DVL®4D MicroFit Lumbar Support: 0.8" depth and 2" height adjustment
Warranty: 5 years (all parts and materials); 15 years (non-moving metal components, chair frame)3-Year Free Warranty

Which is cheaper, the X-Chair X3 or the SIHOO B300 Pro?

The SIHOO B300 Pro is cheaper to start: $329.99 versus $979 for the X-Chair X3 at the brand stores (Sep 2026).

Which has a higher weight capacity?

The SIHOO B300 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 B300 Pro as standard.