FlexiSpot Premium Ergonomic Office Chair (C7 Max) vs SIHOO M59AS

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

FlexiSpot

FlexiSpot Premium Ergonomic Office Chair (C7 Max)

$549.99 – $599.99

SIHOO

SIHOO M59AS

$449.99

7 years

longer warranty on FlexiSpot Premium Ergonomic Office Chair (C7 Max) than SIHOO M59AS (official terms)

Differences at a glance

FlexiSpot Premium Ergonomic Office Chair (C7 Max)SIHOO M59AS

Price: $549.99 – $599.99$449.99
Seat height: 18.5–20.9 in46.5–56.5 cm
Seat depth: 15.7–17.3 in17.13 in (≈ 43.5 cm)
Load capacity: 300 lb; 350 lb330 lb (≈ 150 kg)
Recline: 93–135°Recline up to 126°
Arms: 5D3D coordinated flip-up armrests (flip up and down, left and right, forward and backward)
Headrest: 3D; 2.36 in, 135°Double-jointed headrest (height and angle)
Lumbar support: adjustable self-adaptive dynamicDynamic lumbar support in a dual-section backrest
Warranty: 10 years3 years

Which is cheaper, the FlexiSpot Premium Ergonomic Office Chair (C7 Max) or the SIHOO M59AS?

The SIHOO M59AS is cheaper to start: $449.99 versus $549.99 for the FlexiSpot Premium Ergonomic Office Chair (C7 Max) 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 Premium Ergonomic Office Chair (C7 Max).

Which has a headrest?

Both: the FlexiSpot Premium Ergonomic Office Chair (C7 Max) as standard and the SIHOO M59AS as standard.