Office Star ProGrid vs SIHOO Doro S100

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 S100

$499.99 – $509.99

$80.01

lower starting price for SIHOO Doro S100 than Office Star ProGrid at the brand stores

Differences at a glance

Office Star ProGridSIHOO Doro S100

Price: $580 – $650$499.99 – $509.99
Seat height: 19.5–23 in (50–58 cm)46–54 cm
Seat depth: 19.5” D; Seat Travel: 3.75”15.15–17.12 in (≈ 38.5-43.5 cm)
Recline: 2-to-1 synchro tilt control with adjustable tilt tensionReclines up to 135°
Arms: Height adjustable arms; Arms Max Inside: 19”; Arms to Floor Min: 25.25”; Arms to Seat Min: 6.5”4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage); Up and down 2.76 in, forward and back 1.18 in, side to side, rotate 72°
Lumbar support: Breathable ProGrid® back with built-in lumbar support; Ratchet back height adjustmentDual dynamic lumbar support

Which is cheaper, the Office Star ProGrid or the SIHOO Doro S100?

The SIHOO Doro S100 is cheaper to start: $499.99 versus $580 for the Office Star ProGrid at the brand stores (Sep 2026).