SIHOO M57 vs Herman Miller Cosm High Back

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

SIHOO M57

SIHOO

SIHOO M57

$319.99

VS
Herman Miller Cosm High Back

Herman Miller

Herman Miller Cosm High Back

$1,925 – $2,400

$1,605.01

lower starting price for SIHOO M57 than Herman Miller Cosm High Back at the brand stores

Differences at a glance

SIHOO M57Herman Miller Cosm High Back
Price
$319.99$1,925 – $2,400
Seat height
46–55 cm (≈ 18.1-21.7 in)14.8–21.4 in (37.6–54.4 cm)
Seat depth
18.11 in (≈ 46 cm)15.9 in (40.4 cm)
Load capacity
330 lb (≈ 150 kg)350 lb (158.8 kg)
Arms
3D coordinated armrests (up and down, left and right, forward and backward)Leaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"
Warranty
3 years12-year, 3-shift warranty, with limited exceptions

Questions

Which is cheaper, the SIHOO M57 or the Herman Miller Cosm High Back?

The SIHOO M57 is cheaper to start: $319.99 versus $1,925 for the Herman Miller Cosm High Back at the brand stores (Oct 2026).

Which has a higher weight capacity?

The Herman Miller Cosm High Back, rated for 350 lb versus 330 lb for the SIHOO M57.

SIHOO M57: specs, reviews, where to buy →Herman Miller Cosm High Back: specs, reviews, where to buy →

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