Steelcase Series 1 vs SIHOO B300 Pro

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 B300 Pro

$329.99 – $379.99

$219.01

lower starting price for SIHOO B300 Pro than Steelcase Series 1 at the brand stores

Differences at a glance

Steelcase Series 1SIHOO B300 Pro

Price: $549 – $750$329.99 – $379.99
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)46.8–55.3 cm
Seat depth: 15.5"D to 17.75"D (functional seat depth)16.5–18.5 in (≈ 42-47 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 reclineThree lockable recline angles: 105°, 120°, 135°
Arms: 4D arms (standard), height-adjustable arms or armless6D All-Around Armrests (rotate, adjust, flip up)
Headrest: Optional headrest; adjusts 3.25" vertically3D Ultra-Wide Headrest
Lumbar support: Adjustable lumbar is standard; fixed lumbar is available (3D Microknit Back only)4D MicroFit Lumbar Support: 0.8" depth and 2" height adjustment
Warranty: Limited Lifetime Warranty; 12-year, multi-shift, 24/7 parts and labor3-Year Free Warranty

Which is cheaper, the Steelcase Series 1 or the SIHOO B300 Pro?

The SIHOO B300 Pro is cheaper to start: $329.99 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 B300 Pro as standard.