FlexiSpot Soutien Ergonomic Office Chair (C5) vs SIHOO B100

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

FlexiSpot Soutien Ergonomic Office Chair (C5)

FlexiSpot

FlexiSpot Soutien Ergonomic Office Chair (C5)

$249.99 – $279.99

VS
SIHOO B100

SIHOO

SIHOO B100

$199.99 – $259.99

2 years

longer warranty on FlexiSpot Soutien Ergonomic Office Chair (C5) than SIHOO B100 (official terms)

Differences at a glance

FlexiSpot Soutien Ergonomic Office Chair (C5)SIHOO B100
Price
$249.99 – $279.99$199.99 – $259.99
Seat height
17.9–20.9 inSeat height adjustable from 18.3" to 21.9"
Load capacity
300 lb330 lb (≈ 150 kg)
Recline
95–115°Three lockable angles: 110°, 125° and 135°
Arms
2DFlip-up 2D armrests
Headrest
2DWide 2D adjustable headrest
Lumbar support
2DFloating sacral cushion (targeted sacral support)
Warranty
5 years3 years

Questions

Which is cheaper, the FlexiSpot Soutien Ergonomic Office Chair (C5) or the SIHOO B100?

The SIHOO B100 is cheaper to start: $199.99 versus $249.99 for the FlexiSpot Soutien Ergonomic Office Chair (C5) at the brand stores (Oct 2026).

Which has a higher weight capacity?

The SIHOO B100, rated for 330 lb versus 300 lb for the FlexiSpot Soutien Ergonomic Office Chair (C5).

Which has a headrest?

Both: the FlexiSpot Soutien Ergonomic Office Chair (C5) as standard and the SIHOO B100 as standard.

FlexiSpot Soutien Ergonomic Office Chair (C5): specs, reviews, where to buy →SIHOO B100: specs, reviews, where to buy →

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