Herman Miller Cosm Low Back vs Okamura Contessa II
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
Herman Miller
Herman Miller Cosm Low Back
$1,345 – $1,820
VS
2.3 in
more seat-height adjustment on Herman Miller Cosm Low Back than Okamura Contessa II (official specs)
Differences at a glance
Sources
- Cosm Specs - Herman Miller ↗Checked Sep 29, 2026
- Okamura Contessa II Spec Guide, Global (BIFMA, mm), January 2026 ↗Checked Sep 26, 2026
- Low-Back Cosm Chair - Herman Miller Store ↗Checked Sep 29, 2026
- Contessa II | Okamura global (okamura.com, Asia Pacific English) ↗Checked Sep 26, 2026
- Okamura Global General Warranty Statement (excludes Japan) ↗Checked Sep 26, 2026
- US Herman Miller Store (price) ↗Checked Oct 11, 2026
- OKAMURA Lifestyle Store (Japan) (price) ↗Checked Oct 11, 2026
Herman Miller Cosm Low BackOkamura Contessa II
- Price
- $1,345 – $1,820¥243,650 – ¥377,410
- Seat height
- 14.8–21.4 in (37.6–54.4 cm)434–544 mm (17.1–21.4 in)
- Seat depth
- 15.9 in (40.4 cm)400–450 mm (15.7–17.7 in)
- Load capacity
- 350 lb (158.8 kg)300 lb (136 kg)
- Arms
- Leaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"4D arm or fixed arm; armrest height from the floor 604–814 mm (4D arm), 639–749 mm (fixed arm) (23.8–32 in; 25.2–29.5 in)
- Warranty
- 12-year, 3-shift warranty, with limited exceptions10 years: structural components, including mechanisms and adjustable arms; 5 years: casters, gas cylinder, adjustment levers; 2 years: coating finish, mesh and fabric, cushions, arm pads
What users mention
From 3 Herman Miller Cosm Low Back and 2 Okamura Contessa II user reviews, most mentioned first. Green is liked, orange is a caution.
Comfort
Herman Miller Cosm Low Back7 mentionsOkamura Contessa II7 mentionsRecline and tilt
Herman Miller Cosm Low Back9 mentionsOkamura Contessa II2 mentionsPrice and value
Herman Miller Cosm Low Back5 mentionsOkamura Contessa II6 mentionsSize and fit
Herman Miller Cosm Low Back6 mentionsOkamura Contessa II4 mentionsAdjustability
Herman Miller Cosm Low Back5 mentionsOkamura Contessa II5 mentionsBack support
Herman Miller Cosm Low Back3 mentionsOkamura Contessa II7 mentions
Questions
Which has a higher weight capacity?
The Herman Miller Cosm Low Back, rated for 350 lb versus 300 lb for the Okamura Contessa II.
What do owners mention most?
Recline and tilt for the Herman Miller Cosm Low Back, and comfort for the Okamura Contessa II, based on review summaries.
Herman Miller Cosm Low Back: specs, reviews, where to buy →Okamura Contessa II: specs, reviews, where to buy →
Swap in a similar chair
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More comparisons
- Herman Miller Cosm Low Back vs Steelcase Gesture Arms: Leaf Arms on Herman Miller Cosm Low Back; Width 10.25–22.5 in between arms on Steelcase Gesture.
- Herman Miller Cosm Low Back vs Herman Miller Aeron Arms: Leaf Arms on Herman Miller Cosm Low Back; Arm height 7.5–11.5 in on Herman Miller Aeron.
- Okamura Contessa II vs Steelcase Gesture Arms: 4D arm or fixed arm on Okamura Contessa II; Width 10.25–22.5 in between arms on Steelcase Gesture.
- Okamura Contessa II vs Herman Miller Aeron Arms: 4D arm or fixed arm on Okamura Contessa II; Arm height 7.5–11.5 in on Herman Miller Aeron.
- Okamura Contessa II vs Steelcase Leap V2 Load capacity: 300 lb on Okamura Contessa II; 400 lb on Steelcase Leap V2.
- Okamura Contessa II vs Herman Miller Cosm High Back Arms: 4D arm or fixed arm on Okamura Contessa II; Leaf Arms on Herman Miller Cosm High Back.

