SIHOO B300 Pro vs FlexiSpot OC3

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

SIHOO

SIHOO B300 Pro

$329.99 – $379.99

FlexiSpot

FlexiSpot OC3

$269.99

2 years

longer warranty on FlexiSpot OC3 than SIHOO B300 Pro (official terms)

Differences at a glance

SIHOO B300 ProFlexiSpot OC3

Price: $329.99 – $379.99$269.99
Seat height: 46.8–55.3 cm18.5–22.4 in (47-57 cm)
Seat depth: 16.5–18.5 in (≈ 42-47 cm)15.9 in (40 cm)
Load capacity: 330 lb (≈ 150 kg)300 lb (136 kg)
Recline: Three lockable recline angles: 105°, 120°, 135°90–130°
Arms: 6D All-Around Armrests (rotate, adjust, flip up)2D; 3.9" height adjustment
Headrest: 3D Ultra-Wide Headrest2D headrest; 2.1" height and 30° rotation
Lumbar support: 4D MicroFit Lumbar Support: 0.8" depth and 2" height adjustment1.9" Height Adjustable
Warranty: 3-Year Free Warranty5 Years

Which is cheaper, the SIHOO B300 Pro or the FlexiSpot OC3?

The FlexiSpot OC3 is cheaper to start: $269.99 versus $329.99 for the SIHOO B300 Pro at the brand stores (Oct 2026).

Which has a headrest?

Both: the SIHOO B300 Pro as standard and the FlexiSpot OC3 as standard.