Steelcase Karman vs SIHOO Doro S300

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

Steelcase

Steelcase Karman

$1,199 – $1,543

SIHOO

SIHOO Doro S300

$999.99

28.8 lb

lighter: Steelcase Karman weighs less than SIHOO Doro S300 (official specs)

Differences at a glance

Steelcase KarmanSIHOO Doro S300

Price: $1,199 – $1,543$999.99
Seat height: 15.625–20 in (39.7–50.8 cm)47 – 55.5 cm (18.50 – 21.85 in)
Seat depth: Fixed seat depth (no number given)40 – 47 cm (15.75 – 18.50 in)
Load capacity: 350 lb (158.8 kg)330 lb (≈ 150 kg)
Recline: Comfort dial supports four recline positionsRecline Angles: 100°, 110°, 130°
Arms: 4D arms or armless; 4D ARM: raise up and down, pivot in and out, shift in all directions6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)
Headrest: No headrest option; High Back version has an adjustable neck support pillowSoft, integrated headrest; upper backrest adjusts in 5 levels
Lumbar support: Optional lumbar supportDual dynamic lumbar support; angle 90°-105° fine-tuned with the gas lift
Warranty: Steelcase Limited Lifetime Warranty3 years

From 7 Steelcase Karman and 0 SIHOO Doro S300 user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the Steelcase Karman or the SIHOO Doro S300?

The SIHOO Doro S300 is cheaper to start: $999.99 versus $1,199 for the Steelcase Karman at the brand stores (Sep 2026).

Which has a higher weight capacity?

The Steelcase Karman, rated for 350 lb versus 330 lb for the SIHOO Doro S300.

Which has a headrest?

Only the SIHOO Doro S300 (as standard); the Steelcase Karman does not offer one.

What do owners mention most?

Comfort for the Steelcase Karman, and breathability for the SIHOO Doro S300, based on review summaries.