SIHOO B300 Pro vs Herman Miller Cosm Mid Back
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
$1,700.01
lower starting price for SIHOO B300 Pro than Herman Miller Cosm Mid 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 Mid-Back Chair - Herman Miller Store ↗Checked Oct 17, 2026
SIHOO B300 ProHerman Miller Cosm Mid Back
- Price
- $329.99 – $379.99$2,030
- Seat height
- 46.8–55.3 cm14.875–21 in
- Seat depth
- 16.5–18.5 in (≈ 42-47 cm)15.5 in
- Load capacity
- 330 lb (≈ 150 kg)350 lb
- Warranty
- 3-Year Free Warranty12 years
Questions
Which is cheaper, the SIHOO B300 Pro or the Herman Miller Cosm Mid Back?
The SIHOO B300 Pro is cheaper to start: $329.99 versus $2,030 for the Herman Miller Cosm Mid Back at the brand stores (Oct 2026).
Which has a higher weight capacity?
The Herman Miller Cosm Mid Back, rated for 350 lb versus 330 lb for the SIHOO B300 Pro.
SIHOO B300 Pro: specs, reviews, where to buy →Herman Miller Cosm Mid Back: specs, reviews, where to buy →
