KI Altus vs SIHOO Doro S300

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

KI Altus

$881 – $1,516

SIHOO

SIHOO Doro S300

$999.99

$118.99

lower starting price for KI Altus than SIHOO Doro S300 at the brand stores

Differences at a glance

KI AltusSIHOO Doro S300

Price: $881 – $1,516$999.99
Seat height: 17–21.75 in (43.2–55.2 cm); 16.25–20.75 in (41.3–52.7 cm)47 – 55.5 cm (18.50 – 21.85 in)
Seat depth: 17.25–19.75 in (43.8–50.2 cm); 15.5–18 in (39.4–45.7 cm)40 – 47 cm (15.75 – 18.50 in)
Load capacity: supports up to 400 pounds330 lb (≈ 150 kg)
Arms: Adjustable arms, fixed arms, or armless6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)
Headrest: Headrest available (Mesh Task / Fabric Task Headrest Adjustable Armchair)Soft, integrated headrest; upper backrest adjusts in 5 levels
Lumbar support: Mesh chair: optional adjustable lumbar (height and depth); fabric chair: automatic lumbar supportDual dynamic lumbar support; angle 90°-105° fine-tuned with the gas lift
Warranty: Lifetime3 years

Which is cheaper, the KI Altus or the SIHOO Doro S300?

The KI Altus is cheaper to start: $881 versus $999.99 for the SIHOO Doro S300 at the brand stores (Sep 2026).

Which has a headrest?

Both: the KI Altus as standard and the SIHOO Doro S300 as standard.

What do owners mention most?

Back support for the KI Altus, and breathability for the SIHOO Doro S300, based on review summaries.