Herman Miller Aeron vs SIHOO Doro C300 Ultra V2

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

Herman Miller

Herman Miller Aeron

$1,775 – $2,840

SIHOO

SIHOO Doro C300 Ultra V2

$679.99 – $689.99

9 years

longer warranty on Herman Miller Aeron than SIHOO Doro C300 Ultra V2 (official terms)

Differences at a glance

Herman Miller AeronSIHOO Doro C300 Ultra V2

Price: $1,775 – $2,840$679.99 – $689.99
Seat height: 14.4–19.3 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)47.5–55.5 cm (≈ 18.7-21.9 in)
Seat depth: 16 / 17 / 18.5 in (40.6 / 43.2 / 47.0 cm)16.9–18.5 in (≈ 43-47 cm)
Load capacity: 300 / 350 / 400 lb (136 / 158.8 / 181.4 kg)330 lb (≈ 150 kg)
Recline: Harmonic 2 Tilt; options: Standard/Basic tilt, Tilt Limiter, Tilt Limiter with Seat AngleRecline Angles 105°, 120°, 135°
Arms: 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)8D Bionic Armrests (up, down, forward, back, rotate, or tilt)
Headrest: None offered by Herman MillerUltra-wide 3D headrest, adjusts in three directions
Lumbar support: Options: No additional support, PostureFit, Adjustable Lumbar Support, Adjustable PostureFit SLDomino™ Sacral-Lumbar Support 2.0: moves up or down, 3 support levels
Warranty: 12-year, 3-shift warranty, with limited exceptions3 years (covers manufacturing defects)

Which is cheaper, the Herman Miller Aeron or the SIHOO Doro C300 Ultra V2?

The SIHOO Doro C300 Ultra V2 is cheaper to start: $679.99 versus $1,775 for the Herman Miller Aeron at the brand stores (Oct 2026).

Which has a headrest?

Only the SIHOO Doro C300 Ultra V2 (as standard); the Herman Miller Aeron does not offer one.