SIHOO M59AS vs Herman Miller Aeron

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

SIHOO

SIHOO M59AS

$449.99

Herman Miller

Herman Miller Aeron

$1,775 – $2,840

9 years

longer warranty on Herman Miller Aeron than SIHOO M59AS (official terms)

Differences at a glance

SIHOO M59ASHerman Miller Aeron

Price: $449.99$1,775 – $2,840
Seat height: 46.5–56.5 cm14.4–19.3 in (36.6–49 cm); 14.8–22.8 in (37.6–57.9 cm); 15.8–22.8 in (40.1–57.9 cm)
Seat depth: 17.13 in (≈ 43.5 cm)16 / 17 / 18.5 in (40.6 / 43.2 / 47.0 cm)
Load capacity: 330 lb (≈ 150 kg)300 / 350 / 400 lb (136 / 158.8 / 181.4 kg)
Recline: Recline up to 126°Harmonic 2 Tilt; options: Standard/Basic tilt, Tilt Limiter, Tilt Limiter with Seat Angle
Arms: 3D coordinated flip-up armrests (flip up and down, left and right, forward and backward)Arm height 7.5–11.5 in (adjustable arms); 8.5 in (fixed arms); Options: Fully Adjustable Arms, Height-Adjustable Arms with Pivot, Height-Adjustable Arms, No Arms, Stationary Arms; Arm Height 7.5–11.5 in (Fully Adjustable Arms, specs page)
Headrest: Double-jointed headrest (height and angle)None offered by Herman Miller
Lumbar support: Dynamic lumbar support in a dual-section backrestOptions: No additional support, PostureFit, Adjustable Lumbar Support, Adjustable PostureFit SL
Warranty: 3 years12-year, 3-shift warranty, with limited exceptions

Which is cheaper, the SIHOO M59AS or the Herman Miller Aeron?

The SIHOO M59AS is cheaper to start: $449.99 versus $1,775 for the Herman Miller Aeron at the brand stores (Oct 2026).

Which has a headrest?

Only the SIHOO M59AS (as standard); the Herman Miller Aeron does not offer one.