Office Star ProGrid vs SIHOO Doro C300 Pro

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

Office Star

Office Star ProGrid

$580 – $650

SIHOO

SIHOO Doro C300 Pro

$789.99 – $839.99

$209.99

lower starting price for Office Star ProGrid than SIHOO Doro C300 Pro at the brand stores

Differences at a glance

Office Star ProGridSIHOO Doro C300 Pro

Price: $580 – $650$789.99 – $839.99
Seat height: 19.5–23 in (50–58 cm)46–56.7 cm
Seat depth: 19.5” D; Seat Travel: 3.75”16.81–17.76 in (≈ 42.7-45.1 cm)
Recline: 2-to-1 synchro tilt control with adjustable tilt tensionMaximum recline angle of 135°
Arms: Height adjustable arms; Arms Max Inside: 19”; Arms to Floor Min: 25.25”; Arms to Seat Min: 6.5”6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)
Lumbar support: Breathable ProGrid® back with built-in lumbar support; Ratchet back height adjustmentLumbar support automatically conforms to your spine (BM Tracking System)

Which is cheaper, the Office Star ProGrid or the SIHOO Doro C300 Pro?

The Office Star ProGrid is cheaper to start: $580 versus $789.99 for the SIHOO Doro C300 Pro at the brand stores (Sep 2026).