Sidiz T80 vs Okamura Contessa II
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
VS
Differences at a glance
Sources
- T80 work-tech chair – SIDIZ (SIDIZ official store, Korea) ↗Checked Sep 29, 2026
- Contessa II | Okamura global (okamura.com, Asia Pacific English) ↗Checked Sep 26, 2026
- Okamura Japan product page: Contessa Seconda (Japanese) ↗Checked Sep 26, 2026
- Okamura Contessa II Spec Guide, Global (BIFMA, mm), January 2026 ↗Checked Sep 26, 2026
- Okamura Global General Warranty Statement (excludes Japan) ↗Checked Sep 26, 2026
- OKAMURA Lifestyle Store (Japan) (price) ↗Checked Oct 11, 2026
Sidiz T80Okamura Contessa II
- Price
- ₩689,000 – ₩859,000¥243,650 – ¥377,410
- Load capacity
- Maximum load 125 kg (≈ 276 lb)300 lb (136 kg)
- Recline
- Multi-limited tilt (limits backrest recline angle), tilt tension adjustmentAnkle-tilt reclining; recline angle 26°
- Arms
- 3D adjustable armrests (height, front-back position, left-right angle)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)
- Headrest
- Headrest height / angle adjustmentOptions: large fixed headrest or small adjustable headrest (up/down, front/back, swivel)
- Lumbar support
- Lumbar support height adjustmentOptional lumbar support with 60 mm height adjustment (can be retrofitted) (2.4 in)
- Warranty
- 15-year quality warranty (for customers who register the product)10 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 Sidiz T80 and 2 Okamura Contessa II user reviews, most mentioned first. Green is liked, orange is a caution.
Comfort
Sidiz T804 mentionsOkamura Contessa II7 mentionsBack support
Sidiz T802 mentionsOkamura Contessa II7 mentionsAdjustability
Sidiz T803 mentionsOkamura Contessa II5 mentionsBreathability
Sidiz T801 mentionOkamura Contessa II7 mentionsSeat
Sidiz T801 mentionOkamura Contessa II7 mentionsBuild quality
Sidiz T801 mentionOkamura Contessa II5 mentions
Questions
Which has a headrest?
Both: the Sidiz T80 as standard and the Okamura Contessa II as an option.
What do owners mention most?
Comfort for the Sidiz T80, and comfort for the Okamura Contessa II, based on review summaries.
Swap in a similar chair
Compare Sidiz T80 with
Compare Okamura Contessa II with
More comparisons
- Sidiz T80 vs Herman Miller Aeron Headrest: Headrest height / angle adjustment on Sidiz T80; None offered by Herman Miller on Herman Miller Aeron.
- Sidiz T80 vs Steelcase Gesture Headrest: Headrest height / angle adjustment on Sidiz T80; Optional on Steelcase Gesture.
- 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.



