SIHOO Doro S300 vs FlexiSpot Soutien Ergonomic Office Chair (C5)

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

SIHOO

SIHOO Doro S300

$999.99

FlexiSpot

FlexiSpot Soutien Ergonomic Office Chair (C5)

$249.99 – $279.99

$750

lower starting price for FlexiSpot Soutien Ergonomic Office Chair (C5) than SIHOO Doro S300 at the brand stores

Differences at a glance

SIHOO Doro S300FlexiSpot Soutien Ergonomic Office Chair (C5)

Price: $999.99$249.99 – $279.99
Seat height: 47 – 55.5 cm (18.50 – 21.85 in)17.9–20.9 in
Seat depth: 40 – 47 cm (15.75 – 18.50 in)18.7 in
Load capacity: 330 lb (≈ 150 kg)300 lb
Recline: Recline Angles: 100°, 110°, 130°95–115°
Arms: 6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)2D
Headrest: Soft, integrated headrest; upper backrest adjusts in 5 levels2D
Lumbar support: Dual dynamic lumbar support; angle 90°-105° fine-tuned with the gas lift2D
Warranty: 3 years5 years

Which is cheaper, the SIHOO Doro S300 or the FlexiSpot Soutien Ergonomic Office Chair (C5)?

The FlexiSpot Soutien Ergonomic Office Chair (C5) is cheaper to start: $249.99 versus $999.99 for the SIHOO Doro S300 at the brand stores (Oct 2026).

Which has a higher weight capacity?

The SIHOO Doro S300, rated for 330 lb versus 300 lb for the FlexiSpot Soutien Ergonomic Office Chair (C5).

Which has a headrest?

Both: the SIHOO Doro S300 as standard and the FlexiSpot Soutien Ergonomic Office Chair (C5) as standard.