SIHOO B300 Pro 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.
$1,595.01
lower starting price for SIHOO B300 Pro than Herman Miller Cosm High Back at the brand stores
Differences at a glance
Sources
- Sihoo B300 Pro Ergonomic Office Chair – Official US Sihoo Store ↗Checked Oct 16, 2026
- Cosm Specs - Herman Miller ↗Checked Sep 29, 2026
- High-Back Cosm Chair - Herman Miller Store ↗Checked Sep 29, 2026
- US Herman Miller Store (price) ↗Checked Oct 11, 2026
SIHOO B300 ProHerman Miller Cosm High Back
- Price
- $329.99 – $379.99$1,925 – $2,400
- Seat height
- 46.8–55.3 cm14.8–21.4 in (37.6–54.4 cm)
- Seat depth
- 16.5–18.5 in (≈ 42-47 cm)15.9 in (40.4 cm)
- Load capacity
- 330 lb (≈ 150 kg)350 lb (158.8 kg)
- Arms
- 6D All-Around Armrests (rotate, adjust, flip up)Leaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"
- Warranty
- 3-Year Free Warranty12-year, 3-shift warranty, with limited exceptions
Questions
Which is cheaper, the SIHOO B300 Pro or the Herman Miller Cosm High Back?
The SIHOO B300 Pro is cheaper to start: $329.99 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 B300 Pro.
SIHOO B300 Pro: specs, reviews, where to buy →Herman Miller Cosm High Back: specs, reviews, where to buy →
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