SIHOO M56C vs FlexiSpot Soutien Ergonomic Office Chair (C5)

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

SIHOO M56C

SIHOO

SIHOO M56C

$184.99

VS

2 years

longer warranty on FlexiSpot Soutien Ergonomic Office Chair (C5) than SIHOO M56C (official terms)

SIHOO M56CFlexiSpot Soutien Ergonomic Office Chair (C5)
Price
$184.99$249.99 – $279.99
Seat depth
17.1 in (≈ 43.4 cm)18.7 in
Load capacity
300 lb (≈ 136 kg)300 lb
Recline
Maximum tilt angle of 125° (reclining lock with 1 position)95–115°
Arms
Armrests adjustable up and down2D
Headrest
Headrest moves up and down and tilts2D
Lumbar support
Ultra-wide dynamic lumbar support: a flexible elastic plate that moves with the backrest (no manual adjustment listed)2D
Warranty
3 years5 years

Questions

Which is cheaper, the SIHOO M56C or the FlexiSpot Soutien Ergonomic Office Chair (C5)?

The SIHOO M56C is cheaper to start: $184.99 versus $249.99 for the FlexiSpot Soutien Ergonomic Office Chair (C5) at the brand stores (Oct 2026).

Which has a higher weight capacity?

Neither. Both are rated for 300 lb in their official specifications.

Which has a headrest?

Both: the SIHOO M56C as standard and the FlexiSpot Soutien Ergonomic Office Chair (C5) as standard.

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