KI Signia vs SIHOO M18

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

KI Signia

$930 – $1,076

SIHOO

SIHOO M18

$289.99 – $299.99

$640.01

lower starting price for SIHOO M18 than KI Signia at the brand stores

Differences at a glance

KI SigniaSIHOO M18

Price: $930 – $1,076$289.99 – $299.99
Seat height: 17.5–22 in (44.5–55.9 cm)44–54 cm
Seat depth: 17–20 in (43.2–50.8 cm)17.91 in (≈ 45.5 cm)
Recline: Five-position back travel limiter provides up to 27 degrees of reclineMaximum 126° recline angle
Arms: Armless, fixed reverse cantilever conference arms, 1D adjustable arms, or 4D adjustable armsAdjustable armrests (Up and down)
Lumbar support: Optional lumbar support with 2.5" of vertical adjustmentLumbar support adjusts vertically and horizontally
Warranty: Lifetime3 years

Which is cheaper, the KI Signia or the SIHOO M18?

The SIHOO M18 is cheaper to start: $289.99 versus $930 for the KI Signia at the brand stores (Sep 2026).