Sidiz T80 vs Humanscale Freedom
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
Differences at a glance
Sources
- T80 work-tech chair – SIDIZ (SIDIZ official store, Korea) ↗Checked Sep 29, 2026
- Freedom Ocean Task Chair | Humanscale Shop ↗Checked Sep 28, 2026
- Humanscale US Price Guide, Feb 2020 (PDF) – Freedom Features & Specifications pages ↗Checked Sep 28, 2026
Sidiz T80Humanscale Freedom
- Price
- ₩689,000 – ₩859,000$1,494 – $2,567
- Load capacity
- Maximum load 125 kg (≈ 276 lb)400 lb (181.4 kg)
- Recline
- Multi-limited tilt (limits backrest recline angle), tilt tension adjustmentWeight-sensitive (self-adjusting) recline; 22° recline plus 7° backrest tilt; seat-to-back reference angle 100°–129°
- Arms
- 3D adjustable armrests (height, front-back position, left-right angle)6 in range of vertical motion; armrest height 3.75–9.6 in from compressed seat
- Headrest
- Headrest height / angle adjustmentFreedom Headrest configuration: Dynamic Headrest, moves with the sitter on recline; 5 in vertical adjustment; 30° radial motion
- Lumbar support
- Lumbar support height adjustmentNo separate lumbar adjustment; pivoting backrest gives up to 1 in additional lumbar support
- Warranty
- 15-year quality warranty (for customers who register the product)15 years; fabric/cushions/arm pads/casters 5 years
What users mention
From 3 Sidiz T80 and 27 Humanscale Freedom user reviews, most mentioned first. Green is liked, orange is a caution.
Adjustability
Sidiz T803 mentionsHumanscale Freedom29 mentionsComfort
Sidiz T804 mentionsHumanscale Freedom27 mentionsDesign
Sidiz T802 mentionsHumanscale Freedom25 mentionsBuild quality
Sidiz T801 mentionHumanscale Freedom24 mentionsRecline and tilt
Sidiz T800 mentionsHumanscale Freedom23 mentionsPrice and value
Sidiz T800 mentionsHumanscale Freedom20 mentions
Questions
Which has a headrest?
Both: the Sidiz T80 as standard and the Humanscale Freedom as standard.
What do owners mention most?
Comfort for the Sidiz T80, and adjustability for the Humanscale Freedom, based on review summaries.
Swap in a similar chair
Compare Sidiz T80 with
Compare Humanscale Freedom 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.
- Humanscale Freedom vs Herman Miller Aeron Arms: 6 in range of vertical motion on Humanscale Freedom; Arm height 7.5–11.5 in on Herman Miller Aeron.
- Humanscale Freedom vs Steelcase Gesture Arms: 6 in range of vertical motion on Humanscale Freedom; Width 10.25–22.5 in between arms on Steelcase Gesture.
- Humanscale Freedom vs Steelcase Leap V2 Humanscale Freedom lists at $1,494 – $2,567; Steelcase Leap V2 at $1,499 – $2,667 (official stores).
- Humanscale Freedom vs Okamura Contessa II Arms: 6 in range of vertical motion on Humanscale Freedom; 4D arm or fixed arm on Okamura Contessa II.



