Herman Miller Zeph vs SIHOO Doro S300

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

Herman Miller Zeph

Herman Miller

Herman Miller Zeph

$560 – $715

VS
SIHOO Doro S300

SIHOO

SIHOO Doro S300

$999.99

9 years

longer warranty on Herman Miller Zeph than SIHOO Doro S300 (official terms)

Herman Miller ZephSIHOO Doro S300
Price
$560 – $715$999.99
Seat height
14.75–20.25 in47 – 55.5 cm (18.50 – 21.85 in)
Seat depth
17 in40 – 47 cm (15.75 – 18.50 in)
Load capacity
350 lb330 lb (≈ 150 kg)
Warranty
12 years3 years

Questions

Which is cheaper, the Herman Miller Zeph or the SIHOO Doro S300?

The Herman Miller Zeph is cheaper to start: $560 versus $999.99 for the SIHOO Doro S300 at the brand stores (Oct 2026).

Which has a higher weight capacity?

The Herman Miller Zeph, rated for 350 lb versus 330 lb for the SIHOO Doro S300.

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