Main trade-off
SIHOO Doro C300 Pro V2
The large number of moving parts takes time to tune, and the 8D arms may feel overactive.
Head-to-head
SIHOO C300 Pro V2 vs Haworth Soji: Soji reaches shorter seat depths, C300 includes a headrest
The short answer
C300 Pro V2 suits someone seeking a mesh seat and included headrest. Soji offers a shorter minimum seat depth, greater depth travel and a cushioned seat.
Before you choose
The reasoning and the trade-offs
Soji covers the full published SIHOO depth range
It extends 0.65 inch shorter and 0.25 inch deeper.
What this is based on
16.9 minus 16.25 equals 0.65. 18.75 minus 18.5 equals 0.25 inches.
Main trade-off
Haworth Soji
The seat is firm and the lumbar pad can feel direct, especially before its height is set correctly.
SIHOO Doro C300 Pro V2
- Choose it for
- You want mesh under the seat as well as behind your back.
- You want a supplied headrest for reclined breaks.
- Main trade-off
- The large number of moving parts takes time to tune, and the 8D arms may feel overactive.
Haworth Soji
- Choose it for
- You need seat depth below 16.9 inches.
- You prefer a foam seat and assembled delivery.
- Main trade-off
- The seat is firm and the lumbar pad can feel direct, especially before its height is set correctly.
About this comparison
Compare C300 Pro V2 and Soji for seat material, head support and usable seat-depth range, including the fit differences hidden behind their adjustment lists.
Winner by situation
Start with what you need it to do
Need depth below 16.9 inches
Soji shortens to 16.25 inches.
- SIHOO Doro C300 Pro V2
- Caution
- Haworth Soji
- Better fit
Want a mesh seat
SIHOO has mesh under the sitter.
- SIHOO Doro C300 Pro V2
- Better fit
- Haworth Soji
- Caution
Want an included headrest
The selected Soji has none.
- SIHOO Doro C300 Pro V2
- Better fit
- Haworth Soji
- Caution
Prefer assembled delivery
Soji arrives assembled.
- SIHOO Doro C300 Pro V2
- Good
- Haworth Soji
- Better fit
What matters in practice
The differences that matter
Soji covers the full published SIHOO depth range
It extends 0.65 inch shorter and 0.25 inch deeper.
How we reached this conclusion
16.9 minus 16.25 equals 0.65. 18.75 minus 18.5 equals 0.25 inches.
A wider seat can still have less depth adjustment
SIHOO is 0.5 inch wider but offers 0.9 inch less slide travel.
How we reached this conclusion
20.5 minus 20 equals 0.5. Soji travel is 2.5 inches versus SIHOO 1.6 inches, a 0.9 inch difference.
Head support changes the reclined setup
C300 Pro V2 includes a headrest while the selected Soji leaves that area unsupported.
How we reached this conclusion
Compare included SIHOO headrest with the headrest-free Soji configuration, without assuming medical benefit.
Choice A
SIHOO, Black, Standard
Doro C300 Pro V2
SIHOO’s newer full-body adaptive chair adds seat depth, 8D synchronized arms and a broader sacral-lumbar system.
- Best matched use
- A tall, highly adjustable all-mesh chair with a supportive headrest
Checked facts
- Seat depth adjusts from 16.9 to 18.5 inches
- Eight-dimensional synchronized arms and an ultra-wide 3D headrest are standard
- Official specifications list 105, 120 and 135 degree recline positions with a 330 lb limit
Choice B
Haworth, Mist
Soji
A straightforward commercial task chair with seat-depth control, synchronized tilt and a supportive foam seat.
- Best matched use
- A durable, easily adjusted chair for shared or home offices
Checked facts
- Synchronized tilt includes an upright back lock
- The seat uses a waterfall edge and adjustable depth
- Haworth lists GREENGUARD Gold, BIFMA compliance and North American manufacturing
Meaningful differences
What changes the fit
| What changes | SIHOO Doro C300 Pro V2 | Haworth Soji | Why it matters |
|---|---|---|---|
| Seat material | Mesh | Cushioned upholstery | The underside support and contact feel differ. |
| Seat depth | 16.9 to 18.5 inches | 16.25 to 18.75 inches | Soji spans a wider range at both ends. |
| Seat width | 20.5 inches | 20 inches | C300 Pro V2 is 0.5 inch wider by the listed seat dimensions. |
| Headrest | Included adjustable headrest | No headrest on selected configuration | C300 supplies head support without an accessory search. |
| Rated load | 330 lb | 350 lb | Soji adds 20 lb of rated capacity. |
What you give up
Every choice has a cost
If you choose SIHOO Doro C300 Pro V2
- The official US standard version was backordered when reviewed, while the exact Amazon page showed offer-dependent availability.
If you choose Haworth Soji
- The exact Mist Amazon page had limited offer availability when checked, though Haworth still sells Soji directly.
Recommendation switch
The decision flips if...
You want foam seating with more lower-back control
Choose neither. Leap combines a cushioned seat with separate lumbar firmness and recline controls.
What matters in practice
How to make the call
For a shorter seat setting
Soji has the clearer fit advantage when you need less than 16.9 inches of depth. Its range also extends farther at the deep end. More advertised adjustment axes on the SIHOO do not override those actual seat endpoints.
For a warm room
C300 Pro V2 uses mesh at both contact surfaces, whereas Soji uses a cushioned seat beneath its mesh back. That makes SIHOO worth trying when you dislike upholstered seats. It is a material distinction, with no measured temperature reduction claimed.
For work followed by reclined breaks
SIHOO includes an adjustable headrest and a recline-focused feature set. Soji offers a simpler task-chair setup and assembled delivery. Check where the headrest lands on your body, because having one in the box does not guarantee useful support.
What this comparison cannot tell you
- This comparison uses documented controls and dimensions. We have not measured pressure, durability or comfort in a hands-on test.
- Manufacturer warranties depend on seller eligibility and regional terms. Neither chair is presented as treatment for pain.
What the facts say
What the comparison shows
Useful conclusions from the current office chairs comparison, followed by the checked facts used to reach them.
Compared set
None of the 32 models checked covers every part of “I prefer a suspended mesh seat”, “I want neck support when reclining”, “I need the seat depth to fit my legs”, and “I prefer a padded seat”, so the recommendation favors the closest practical compromise.
0 matching models from 32 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “I prefer a suspended mesh seat”, “I want neck support when reclining”, “I need the seat depth to fit my legs”, and “I prefer a padded seat”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| SIHOO Doro C300 Pro V2 |
|
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| Haworth Soji |
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
SIHOO Doro C300 Pro V2
You want mesh under the seat as well as behind your back.
See price & reviews on AmazonHaworth Soji
You need seat depth below 16.9 inches.
See price & reviews on AmazonLinks open in a new tab.