SIHOO M18 vs Haworth Soji

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

SIHOO

SIHOO M18

$289.99 – $299.99

Haworth

Haworth Soji

$545

9 years

longer warranty on Haworth Soji than SIHOO M18 (official terms)

Differences at a glance

SIHOO M18Haworth Soji

Price: $289.99 – $299.99$545
Seat height: 44–54 cm16.4–21 in (41.7–53.3 cm)
Seat depth: 17.91 in (≈ 45.5 cm)16.25–18.75 in (41.3–47.6 cm)
Load capacity: 330 lb (≈ 150 kg)350 lb (158.8 kg)
Recline: Maximum 126° recline angleTilt tension control; back lock; optional forward tilt by 5°
Arms: Adjustable armrests (Up and down)Fixed arms, height-adjustable arms, 4D arms, and armless options available
Lumbar support: Lumbar support adjusts vertically and horizontallyOptional lumbar adjustment for personalized support within a 3.5" range
Warranty: 3 years12 year warranty

From 5 SIHOO M18 and 8 Haworth Soji user reviews, most mentioned first. Green is liked, orange is a caution.

Which is cheaper, the SIHOO M18 or the Haworth Soji?

The SIHOO M18 is cheaper to start: $289.99 versus $545 for the Haworth Soji at the brand stores (Oct 2026).

What do owners mention most?

Price and value for the SIHOO M18, and price and value for the Haworth Soji, based on review summaries.