Steelcase Series 1 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 Series 1

$549 – $750

SIHOO

SIHOO Doro S300

$999.99

$450.99

lower starting price for Steelcase Series 1 than SIHOO Doro S300 at the brand stores

Differences at a glance

Steelcase Series 1SIHOO Doro S300

Price: $549 – $750$999.99
Seat height: 16.5–21.5 in (41.9-54.6 cm); 14.75–17.75 in (37.5-45.1 cm); 17.25–22 in (43.8-55.9 cm)47 – 55.5 cm (18.50 – 21.85 in)
Seat depth: 15.5"D to 17.75"D (functional seat depth)40 – 47 cm (15.75 – 18.50 in)
Load capacity: 400 lb (181.4 kg); 300 lb (136.1 kg)330 lb (≈ 150 kg)
Recline: Weight-activated synchro tilt; comfort dial with upright back lock, boost setting and weight-activated full reclineRecline Angles: 100°, 110°, 130°
Arms: 4D arms (standard), height-adjustable arms or armless6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)
Headrest: Optional headrest; adjusts 3.25" verticallySoft, integrated headrest; upper backrest adjusts in 5 levels
Lumbar support: Adjustable lumbar is standard; fixed lumbar is available (3D Microknit Back only)Dual dynamic lumbar support; angle 90°-105° fine-tuned with the gas lift
Warranty: Limited Lifetime Warranty; 12-year, multi-shift, 24/7 parts and labor3 years

From 5 Steelcase Series 1 and 0 SIHOO Doro S300 user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the Steelcase Series 1 or the SIHOO Doro S300?

The Steelcase Series 1 is cheaper to start: $549 versus $999.99 for the SIHOO Doro S300 at the brand stores (Sep 2026).

Which has a headrest?

Both: the Steelcase Series 1 as an option and the SIHOO Doro S300 as standard.

What do owners mention most?

Adjustability for the Steelcase Series 1, and breathability for the SIHOO Doro S300, based on review summaries.