FlexiSpot Premium Ergo Executive Chair (R8) vs SIHOO Doro S300

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

FlexiSpot

FlexiSpot Premium Ergo Executive Chair (R8)

$799.99

SIHOO

SIHOO Doro S300

$999.99

7 years

longer warranty on FlexiSpot Premium Ergo Executive Chair (R8) than SIHOO Doro S300 (official terms)

Differences at a glance

FlexiSpot Premium Ergo Executive Chair (R8)SIHOO Doro S300

Price: $799.99$999.99
Seat height: 18.81–22.87 in47 – 55.5 cm (18.50 – 21.85 in)
Seat depth: 18.5–20.47 in40 – 47 cm (15.75 – 18.50 in)
Load capacity: 330 lb330 lb (≈ 150 kg)
Recline: 90–130°Recline Angles: 100°, 110°, 130°
Headrest: 2D + adaptiveSoft, integrated headrest; upper backrest adjusts in 5 levels
Lumbar support: adaptiveDual dynamic lumbar support; angle 90°-105° fine-tuned with the gas lift
Warranty: 10 years3 years

Which is cheaper, the FlexiSpot Premium Ergo Executive Chair (R8) or the SIHOO Doro S300?

The FlexiSpot Premium Ergo Executive Chair (R8) is cheaper to start: $799.99 versus $999.99 for the SIHOO Doro S300 at the brand stores (Oct 2026).

Which has a higher weight capacity?

Neither. Both are rated for 330 lb in their official specifications.

Which has a headrest?

Both: the FlexiSpot Premium Ergo Executive Chair (R8) as standard and the SIHOO Doro S300 as standard.