SIHOO Doro C300 Pro vs FlexiSpot Standard Ergo Office Chair (C4)

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

SIHOO

SIHOO Doro C300 Pro

$789.99 – $839.99

FlexiSpot

FlexiSpot Standard Ergo Office Chair (C4)

$219.99 – $239.99

$570

lower starting price for FlexiSpot Standard Ergo Office Chair (C4) than SIHOO Doro C300 Pro at the brand stores

Differences at a glance

SIHOO Doro C300 ProFlexiSpot Standard Ergo Office Chair (C4)

Price: $789.99 – $839.99$219.99 – $239.99
Seat height: 46–56.7 cm17.91–20.87 in
Seat depth: 16.81–17.76 in (≈ 42.7-45.1 cm)19.49 in
Load capacity: 330 lb (≈ 150 kg)300 lb
Recline: Maximum recline angle of 135°90–135°
Arms: 6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)3D
Headrest: Headrest adjusts up and down, back and forth, or rotates3D
Lumbar support: Lumbar support automatically conforms to your spine (BM Tracking System)fixed
Warranty: 3 years5 years

Which is cheaper, the SIHOO Doro C300 Pro or the FlexiSpot Standard Ergo Office Chair (C4)?

The FlexiSpot Standard Ergo Office Chair (C4) is cheaper to start: $219.99 versus $789.99 for the SIHOO Doro C300 Pro at the brand stores (Oct 2026).

Which has a higher weight capacity?

The SIHOO Doro C300 Pro, rated for 330 lb versus 300 lb for the FlexiSpot Standard Ergo Office Chair (C4).

Which has a headrest?

Both: the SIHOO Doro C300 Pro as standard and the FlexiSpot Standard Ergo Office Chair (C4) as standard.