SIHOO Doro C300 vs Itoki ACT2
Side by side from official specifications, sourced prices and User Insights. No written comparison exists for this pair yet.
18.4 lb
lighter: Itoki ACT2 weighs less than SIHOO Doro C300 (official specs)
Differences at a glance
Sources
- Doro C300 Ergonomic Office Chair – UK Sihoo official Shop ↗Checked Sep 29, 2026
- ITOKI Product Catalog: Act2 KJ-457JE-GNB4 ↗Checked Sep 29, 2026
- ITOKI Product Catalog: Act2 functions and features ↗Checked Sep 29, 2026
- Sihoo Doro C300 Advanced Ergonomic Office Chair – Official US Sihoo Store ↗Checked Sep 29, 2026
- ITOKI quality warranty ↗Checked Sep 29, 2026
- ITOKI (Japan) (price) ↗Checked Sep 25, 2026
SIHOO Doro C300Itoki ACT2
- Price
- $559.99 – $569.99¥132,240
- Seat height
- 47–55 cm450–565 mm (17.7-22.2 in)
- Recline
- Recline Angles: 110°, 120°, 130°20°
- Arms
- 4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage)Adjustable arms (4D link arms): height, depth, rotation angle
- Headrest
- 3D Mechanical HeadrestAdjustable head support: 60 mm height, 30° front-back
- Lumbar support
- Self-adaptive dynamic lumbar supportPelvis & lumbar support: 60 mm, 7 steps
- Warranty
- 3 yearsStructure 3 years (mechanisms and moving parts 2 years, exterior and surface finish 1 year)
What users mention
From 1 SIHOO Doro C300 and 6 Itoki ACT2 user reviews, most mentioned first. Green is liked, orange is a caution.
Design
SIHOO Doro C3005 mentionsItoki ACT28 mentionsAdjustability
SIHOO Doro C3007 mentionsItoki ACT25 mentionsBack support
SIHOO Doro C3004 mentionsItoki ACT26 mentionsArmrests
SIHOO Doro C3005 mentionsItoki ACT24 mentionsSeat
SIHOO Doro C3004 mentionsItoki ACT25 mentionsComfort
SIHOO Doro C3004 mentionsItoki ACT24 mentions
Questions
Which has a headrest?
Both: the SIHOO Doro C300 as standard and the Itoki ACT2 as standard.
What do owners mention most?
Adjustability for the SIHOO Doro C300, and design for the Itoki ACT2, based on review summaries.
Swap in a similar chair
Compare SIHOO Doro C300 with
Compare Itoki ACT2 with
More comparisons
- SIHOO Doro C300 vs Steelcase Leap V2 Headrest: 3D Mechanical Headrest on SIHOO Doro C300; Optional on Steelcase Leap V2.
- SIHOO Doro C300 vs Herman Miller Aeron Headrest: 3D Mechanical Headrest on SIHOO Doro C300; None offered by Herman Miller on Herman Miller Aeron.
- SIHOO Doro C300 vs Steelcase Series 1 Headrest: 3D Mechanical Headrest on SIHOO Doro C300; Optional headrest on Steelcase Series 1.
- SIHOO Doro C300 vs HBADA E3 Air (2026 Edition) Arms: 4D coordinated armrests on SIHOO Doro C300; Armrest Height: 68.5cm–84cm on HBADA E3 Air (2026 Edition).
- 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.

