FlexiSpot Standard Ergo Office Chair (C4) vs SIHOO M59AS

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

FlexiSpot Standard Ergo Office Chair (C4)

FlexiSpot

FlexiSpot Standard Ergo Office Chair (C4)

$219.99 – $239.99

VS
SIHOO M59AS

SIHOO

SIHOO M59AS

$449.99

$230

lower starting price for FlexiSpot Standard Ergo Office Chair (C4) than SIHOO M59AS at the brand stores

Differences at a glance

FlexiSpot Standard Ergo Office Chair (C4)SIHOO M59AS
Price
$219.99 – $239.99$449.99
Seat height
17.91–20.87 in46.5–56.5 cm
Seat depth
19.49 in17.13 in (≈ 43.5 cm)
Load capacity
300 lb330 lb (≈ 150 kg)
Recline
90–135°Recline up to 126°
Arms
3D3D coordinated flip-up armrests (flip up and down, left and right, forward and backward)
Headrest
3DDouble-jointed headrest (height and angle)
Lumbar support
fixedDynamic lumbar support in a dual-section backrest
Warranty
5 years3 years

Questions

Which is cheaper, the FlexiSpot Standard Ergo Office Chair (C4) or the SIHOO M59AS?

The FlexiSpot Standard Ergo Office Chair (C4) is cheaper to start: $219.99 versus $449.99 for the SIHOO M59AS at the brand stores (Oct 2026).

Which has a higher weight capacity?

The SIHOO M59AS, rated for 330 lb versus 300 lb for the FlexiSpot Standard Ergo Office Chair (C4).

Which has a headrest?

Both: the FlexiSpot Standard Ergo Office Chair (C4) as standard and the SIHOO M59AS as standard.

FlexiSpot Standard Ergo Office Chair (C4): specs, reviews, where to buy →SIHOO M59AS: specs, reviews, where to buy →

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