Herman Miller Sayl vs SIHOO M59AS

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

Herman Miller

Herman Miller Sayl

$935 – $1,580

SIHOO

SIHOO M59AS

$449.99

9 years

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

Differences at a glance

Herman Miller SaylSIHOO M59AS

Price: $935 – $1,580$449.99
Seat height: 16–20.5 in standard; 15–19 in low; 16.5–22 in extended46.5–56.5 cm
Seat depth: 16.5 in fixed; 16–18 in adjustable17.13 in (≈ 43.5 cm)
Load capacity: 350 lb (159 kg)330 lb (≈ 150 kg)
Recline: Harmonic Tilt; Tilt Limiter standard, Tilt Limiter with Seat Angle optionalRecline up to 126°
Arms: Options: No Arms, Fixed Arms, Height Adjustable Arms, Fully Adjustable 4D Arms3D coordinated flip-up armrests (flip up and down, left and right, forward and backward)
Lumbar support: PostureFit Sacral Support Standard; Lumbar Support OptionalDynamic lumbar support in a dual-section backrest
Warranty: 12-year, 3-shift3 years

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

The SIHOO M59AS is cheaper to start: $449.99 versus $935 for the Herman Miller Sayl at the brand stores (Oct 2026).

Which has a higher weight capacity?

The Herman Miller Sayl, rated for 350 lb versus 330 lb for the SIHOO M59AS.