Itoki ACT2 vs SIHOO B100 Pro
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
3.6 lb
lighter: Itoki ACT2 weighs less than SIHOO B100 Pro (official specs)
Differences at a glance
Sources
- ITOKI Product Catalog: Act2 functions and features ↗Checked Sep 29, 2026
- Sihoo B100 Pro Ergonomic Office Chair With Flip-Up Armrest – Official US Sihoo Store ↗Checked Oct 9, 2026
- ITOKI quality warranty ↗Checked Sep 29, 2026
- ITOKI (Japan) (price) ↗Checked Sep 25, 2026
Itoki ACT2SIHOO B100 Pro
- Price
- ¥132,240$259.99 – $299.99
- Recline
- 20°3-position recline up to 135°
- Arms
- Adjustable arms (4D link arms): height, depth, rotation angleEnlarged 4D flip-up armrests
- Headrest
- Adjustable head support: 60 mm height, 30° front-backWide 3D adjustable headrest
- Lumbar support
- Pelvis & lumbar support: 60 mm, 7 stepsResponsive lower-back support
- Warranty
- Structure 3 years (mechanisms and moving parts 2 years, exterior and surface finish 1 year)3 years
Questions
Which has a headrest?
Both: the Itoki ACT2 as standard and the SIHOO B100 Pro as standard.
Swap in a similar chair
Compare Itoki ACT2 with
Compare SIHOO B100 Pro 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.
- SIHOO B100 Pro vs FlexiSpot OC3 Headrest: Wide 3D adjustable headrest on SIHOO B100 Pro; 2D headrest on FlexiSpot OC3.
- SIHOO B100 Pro vs HBADA E3 Air (2026 Edition) Arms: Enlarged 4D flip-up armrests on SIHOO B100 Pro; Armrest Height: 68.5cm–84cm on HBADA E3 Air (2026 Edition).
- SIHOO B100 Pro vs Secretlab TITAN Evo Load capacity: 330 lb on SIHOO B100 Pro; 130 kg on Secretlab TITAN Evo.
- SIHOO B100 Pro vs SIHOO B100 Headrest: Wide 3D adjustable headrest on SIHOO B100 Pro; Wide 2D adjustable headrest on SIHOO B100.






