Steelcase Series 1 vs SIHOO Doro S100

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 S100

$499.99 – $509.99

Nearly the same price

$549 vs $499.99 starting prices at the brand stores (Steelcase Series 1 vs SIHOO Doro S100)

Differences at a glance

Steelcase Series 1SIHOO Doro S100

Price: $549 – $750$499.99 – $509.99
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)46–54 cm
Seat depth: 15.5"D to 17.75"D (functional seat depth)15.15–17.12 in (≈ 38.5-43.5 cm)
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 reclineReclines up to 135°
Arms: 4D arms (standard), height-adjustable arms or armless4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage); Up and down 2.76 in, forward and back 1.18 in, side to side, rotate 72°
Headrest: Optional headrest; adjusts 3.25" verticallyIntegrated headrest adjusts up or down; upper backrest in five levels
Lumbar support: Adjustable lumbar is standard; fixed lumbar is available (3D Microknit Back only)Dual dynamic lumbar support
Warranty: Limited Lifetime Warranty; 12-year, multi-shift, 24/7 parts and labor3 years

Which is cheaper, the Steelcase Series 1 or the SIHOO Doro S100?

The SIHOO Doro S100 is cheaper to start: $499.99 versus $549 for the Steelcase Series 1 at the brand stores (Sep 2026).

Which has a headrest?

Both: the Steelcase Series 1 as an option and the SIHOO Doro S100 as standard.