Haworth Soji vs SIHOO M59AS

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

Haworth

Haworth Soji

$545

SIHOO

SIHOO M59AS

$449.99

9 years

longer warranty on Haworth Soji than SIHOO M59AS (official terms)

Differences at a glance

Haworth SojiSIHOO M59AS

Price: $545$449.99
Seat height: 16.4–21 in (41.7–53.3 cm)46.5–56.5 cm
Seat depth: 16.25–18.75 in (41.3–47.6 cm)17.13 in (≈ 43.5 cm)
Load capacity: 350 lb (158.8 kg)330 lb (≈ 150 kg)
Recline: Tilt tension control; back lock; optional forward tilt by 5°Recline up to 126°
Arms: Fixed arms, height-adjustable arms, 4D arms, and armless options available3D coordinated flip-up armrests (flip up and down, left and right, forward and backward)
Lumbar support: Optional lumbar adjustment for personalized support within a 3.5" rangeDynamic lumbar support in a dual-section backrest
Warranty: 12 year warranty3 years

Which is cheaper, the Haworth Soji or the SIHOO M59AS?

The SIHOO M59AS is cheaper to start: $449.99 versus $545 for the Haworth Soji at the brand stores (Oct 2026).