SIHOO Doro S300 vs Office Star ProGrid

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

SIHOO

SIHOO Doro S300

$999.99

Office Star

Office Star ProGrid

$580 – $650

$419.99

lower starting price for Office Star ProGrid than SIHOO Doro S300 at the brand stores

Differences at a glance

SIHOO Doro S300Office Star ProGrid

Price: $999.99$580 – $650
Seat height: 47 – 55.5 cm (18.50 – 21.85 in)19.5–23 in (50–58 cm)
Seat depth: 40 – 47 cm (15.75 – 18.50 in)19.5” D; Seat Travel: 3.75”
Recline: Recline Angles: 100°, 110°, 130°2-to-1 synchro tilt control with adjustable tilt tension
Arms: 6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)Height adjustable arms; Arms Max Inside: 19”; Arms to Floor Min: 25.25”; Arms to Seat Min: 6.5”
Lumbar support: Dual dynamic lumbar support; angle 90°-105° fine-tuned with the gas liftBreathable ProGrid® back with built-in lumbar support; Ratchet back height adjustment

Which is cheaper, the SIHOO Doro S300 or the Office Star ProGrid?

The Office Star ProGrid is cheaper to start: $580 versus $999.99 for the SIHOO Doro S300 at the brand stores (Oct 2026).

What do owners mention most?

Breathability for the SIHOO Doro S300, and adjustability for the Office Star ProGrid, based on review summaries.