Itoki ACT2 vs Herman Miller Cosm High Back
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
2.1 in
more seat-height adjustment on Herman Miller Cosm High Back than Itoki ACT2 (official specs)
Differences at a glance
Sources
- ITOKI Product Catalog: Act2 KJ-457JE-GNB4 ↗Checked Sep 29, 2026
- Cosm Specs - Herman Miller ↗Checked Sep 29, 2026
- ITOKI Product Catalog: Act2 functions and features ↗Checked Sep 29, 2026
- ITOKI quality warranty ↗Checked Sep 29, 2026
- ITOKI (Japan) (price) ↗Checked Sep 25, 2026
- US Herman Miller Store (price) ↗Checked Oct 11, 2026
Itoki ACT2Herman Miller Cosm High Back
- Price
- ¥132,240$1,925 – $2,400
- Seat height
- 450–565 mm (17.7-22.2 in)14.8–21.4 in (37.6–54.4 cm)
- Arms
- Adjustable arms (4D link arms): height, depth, rotation angleLeaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms; Arm Height: 7.3–11.7"
- Warranty
- Structure 3 years (mechanisms and moving parts 2 years, exterior and surface finish 1 year)12-year, 3-shift warranty, with limited exceptions
What users mention
From 6 Itoki ACT2 and 33 Herman Miller Cosm High Back user reviews, most mentioned first. Green is liked, orange is a caution.
Adjustability
Itoki ACT25 mentionsHerman Miller Cosm High Back31 mentionsComfort
Itoki ACT24 mentionsHerman Miller Cosm High Back31 mentionsDesign
Itoki ACT28 mentionsHerman Miller Cosm High Back23 mentionsRecline and tilt
Itoki ACT24 mentionsHerman Miller Cosm High Back19 mentionsSize and fit
Itoki ACT24 mentionsHerman Miller Cosm High Back13 mentionsBack support
Itoki ACT26 mentionsHerman Miller Cosm High Back10 mentions
Questions
What do owners mention most?
Design for the Itoki ACT2, and comfort for the Herman Miller Cosm High Back, based on review summaries.
Itoki ACT2: specs, reviews, where to buy →Herman Miller Cosm High Back: specs, reviews, where to buy →
Swap in a similar chair
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Compare Herman Miller Cosm High Back with
More comparisons
- Itoki ACT2 vs Herman Miller Aeron The Itoki ACT2 encourages active sitting, while the Herman Miller Aeron offers iconic mesh ventilation.
- Itoki ACT2 vs Steelcase Gesture The Japanese ACT2 and American Gesture differ sharply on durability reports and value.
- Herman Miller Cosm High Back vs Steelcase Gesture Arms: Leaf Arms on Herman Miller Cosm High Back; Width 10.25–22.5 in between arms on Steelcase Gesture.
- Herman Miller Cosm High Back vs Okamura Contessa II Arms: Leaf Arms on Herman Miller Cosm High Back; 4D arm or fixed arm on Okamura Contessa II.
- Herman Miller Cosm High Back vs Steelcase Leap V2 Load capacity: 350 lb on Herman Miller Cosm High Back; 400 lb on Steelcase Leap V2.
- Herman Miller Cosm High Back vs Humanscale Freedom Arms: Leaf Arms on Herman Miller Cosm High Back; 6 in range of vertical motion on Humanscale Freedom.