Haworth Soji vs SIHOO M57

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 M57

$319.99

9 years

longer warranty on Haworth Soji than SIHOO M57 (official terms)

Differences at a glance

Haworth SojiSIHOO M57

Price: $545$319.99
Seat height: 16.4–21 in (41.7–53.3 cm)46–55 cm (≈ 18.1-21.7 in)
Seat depth: 16.25–18.75 in (41.3–47.6 cm)18.11 in (≈ 46 cm)
Load capacity: 350 lb (158.8 kg)330 lb (≈ 150 kg)
Recline: Tilt tension control; back lock; optional forward tilt by 5°Reclines up to 126°
Arms: Fixed arms, height-adjustable arms, 4D arms, and armless options available3D coordinated armrests (up and down, left and right, forward and backward)
Lumbar support: Optional lumbar adjustment for personalized support within a 3.5" rangeDual-adjustable lumbar support (vertical and horizontal)
Warranty: 12 year warranty3 years

Which is cheaper, the Haworth Soji or the SIHOO M57?

The SIHOO M57 is cheaper to start: $319.99 versus $545 for the Haworth Soji at the brand stores (Oct 2026).