FlexiSpot Standard Ergo Office Chair (C4) vs SIHOO B300 Pro
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
FlexiSpot
FlexiSpot Standard Ergo Office Chair (C4)
$219.99 – $239.99
VS
SIHOO
SIHOO B300 Pro
$329.99 – $379.99
2 years
longer warranty on FlexiSpot Standard Ergo Office Chair (C4) than SIHOO B300 Pro (official terms)
Differences at a glance
Sources
- Standard Ergonomic Office Chair | FlexiChair C4 | Flexispot ↗Checked Oct 17, 2026
- Sihoo B300 Pro Ergonomic Office Chair – Official US Sihoo Store ↗Checked Oct 16, 2026
FlexiSpot Standard Ergo Office Chair (C4)SIHOO B300 Pro
- Price
- $219.99 – $239.99$329.99 – $379.99
- Seat height
- 17.91–20.87 in46.8–55.3 cm
- Seat depth
- 19.49 in16.5–18.5 in (≈ 42-47 cm)
- Load capacity
- 300 lb330 lb (≈ 150 kg)
- Recline
- 90–135°Three lockable recline angles: 105°, 120°, 135°
- Arms
- 3D6D All-Around Armrests (rotate, adjust, flip up)
- Headrest
- 3D3D Ultra-Wide Headrest
- Lumbar support
- fixed4D MicroFit Lumbar Support: 0.8" depth and 2" height adjustment
- Warranty
- 5 years3-Year Free Warranty
Questions
Which is cheaper, the FlexiSpot Standard Ergo Office Chair (C4) or the SIHOO B300 Pro?
The FlexiSpot Standard Ergo Office Chair (C4) is cheaper to start: $219.99 versus $329.99 for the SIHOO B300 Pro at the brand stores (Oct 2026).
Which has a higher weight capacity?
The SIHOO B300 Pro, 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 B300 Pro as standard.
FlexiSpot Standard Ergo Office Chair (C4): specs, reviews, where to buy →SIHOO B300 Pro: specs, reviews, where to buy →
