The catch
SIHOO Doro S100
A user who needs a longer setting cannot make it up through back-height adjustment, because S100’s maximum published depth is shorter.
Side by side
SIHOO S100 vs C300 Pro V2: S100 gets to shorter seat settings, C300 stretches farther
Quick verdict
A shorter seat setting points to S100. S100 shortens to 15.15 inches and extends to 17.12. C300 Pro V2 is the choice when you need more depth, with a published range of 16.9 to 18.5 inches, or when you specifically want its tilting arm pads and separate 3D headrest. The two published depth ranges overlap by only 0.22 inches. Use those numbers to shortlist a trial. They cannot predict fit from your height alone.
Before you buy
Why, and what it costs you
Most of the seat lengths the two sliders cover are different
Both S100 and C300 Pro V2 advertise adjustable depth, yet the only stretch their published ranges share is the 16.9 to 17.12-inch interval. That is 0.22 inches, about 5.6 mm. So a shared desk with two very different seated leg lengths takes more thought than simply picking the chair with more adjustments. Check each person’s fit at both ends of the range. C300’s extra headrest and arm movements cannot make its seat retract below its minimum.
Where this comes from
The overlap works out as min(17.12,18.5) minus max(15.15,16.9) = 0.22 inches, and 0.22 × 25.4 = 5.588 mm. These are manufacturer US dimensions. No independent measurement was taken.
The catch
SIHOO Doro C300 Pro V2
Extra features on C300 Pro V2 do not help if you need a shorter seat, since it starts at 16.9 inches.
SIHOO Doro S100
- Why pick it
- A shorter front-to-back cushion position is what your seated fit calls for.
- You are fine with the S100 upper-back adjustment and have no need for C300’s more elaborate arm mechanism.
- The catch
- A user who needs a longer setting cannot make it up through back-height adjustment, because S100’s maximum published depth is shorter.
SIHOO Doro C300 Pro V2
- Why pick it
- Your seat depth has to go past S100’s published 17.12-inch maximum.
- The separate 3D headrest and rear-pad arm tilt appeal to you for reclined device use.
- The catch
- Extra features on C300 Pro V2 do not help if you need a shorter seat, since it starts at 16.9 inches.
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What this page compares
Different leg lengths, shared desks and evening devices are the focus for Doro S100 and C300 Pro V2. Compare the US seat ranges before choosing by headrest or arm count.
Adjustable depth and supportive-looking backs come on these all-mesh SIHOO chairs, yet their published US seat ranges sit at noticeably different positions.
Which one fits
Pick the situations that sound like you
Seat depth has to be below 16.9 inches
The shorter published minimum belongs to S100.
- SIHOO Doro S100
- Better fit
- SIHOO Doro C300 Pro V2
- Caution
Depth must go beyond 17.12 inches
C300 stretches out to 18.5 inches.
- SIHOO Doro S100
- Caution
- SIHOO Doro C300 Pro V2
- Better fit
Want rear arm pads that tilt for handheld devices
That particular movement is documented for C300.
- SIHOO Doro S100
- Caution
- SIHOO Doro C300 Pro V2
- Better fit
Assume the same weight rating means the same fit
Despite the same 330 lb rating, the seat ranges differ.
- SIHOO Doro S100
- Caution
- SIHOO Doro C300 Pro V2
- Caution
In practice
Differences you will notice
Most of the seat lengths the two sliders cover are different
Both S100 and C300 Pro V2 advertise adjustable depth, yet the only stretch their published ranges share is the 16.9 to 17.12-inch interval. That is 0.22 inches, about 5.6 mm. So a shared desk with two very different seated leg lengths takes more thought than simply picking the chair with more adjustments. Check each person’s fit at both ends of the range. C300’s extra headrest and arm movements cannot make its seat retract below its minimum.
How we worked this out
The overlap works out as min(17.12,18.5) minus max(15.15,16.9) = 0.22 inches, and 0.22 × 25.4 = 5.588 mm. These are manufacturer US dimensions. No independent measurement was taken.
The shorter user’s real problem can be hidden by a tall desk
To reach a fixed keyboard, a shorter user may raise either chair and then find the seat or foot position wrong. S100’s shorter minimum depth can address front-edge fit, but it does not lower the keyboard or guarantee floor contact once the chair is raised. If excessive depth was the original problem, C300’s deeper range helps even less. Check seat length and working height separately, and include a suitable foot-support arrangement if the desk calls for it.
How we worked this out
Differing depth ranges compared with a fixed-height desk. Leg length is not estimated from standing height, and no medical posture is prescribed.
The arm upgrade can be justified by an evening controller position
Someone who works at a keyboard and later holds a controller may value C300’s rear-pad tilt once seat depth fits, since it changes the pad angle for a different forearm position. S100 already has four-dimensional arms, so ordinary height and front-to-back adjustment are not what it lacks. Try the extra tilt with the device you use. C300 earns consideration for this specific reason and not because eight adjustments are always twice as useful as four.
How we worked this out
Documented pad tilt compared with a move from keyboard to controller. No reduced fatigue, strength or comfort performance is asserted.
Option A
SIHOO, US Black, polished base
Doro S100
A shorter front-to-back cushion position is what your seated fit calls for.
- Best for
- A shorter front-to-back cushion position is what your seated fit calls for.
Facts we checked
- Published seat range: 15.15 to 17.12 inches
- Back and head positioning: Five upper-back height positions with integrated upper support
- Arms: Four-dimensional coordinated arms
- Load rating: 330 lb
Option B
SIHOO, Black, Standard
Doro C300 Pro V2
Your seat depth has to go past S100’s published 17.12-inch maximum.
- Best for
- Your seat depth has to go past S100’s published 17.12-inch maximum.
Facts we checked
- Published seat range: 16.9 to 18.5 inches
- Back and head positioning: Adjustable back and separate 3D headrest
- Arms: Eight-dimensional arms with rear-pad tilt
- Load rating: 330 lb
Spec by spec
Where they really differ
| Spec | SIHOO Doro S100 | SIHOO Doro C300 Pro V2 | In practice |
|---|---|---|---|
| Published seat range | 15.15 to 17.12 inches | 16.9 to 18.5 inches | Only 0.22 inches is shared, the interval running from 16.9 to 17.12 inches. |
| Back and head positioning | Five upper-back height positions with integrated upper support | Adjustable back and separate 3D headrest | During recline, check head contact and back position together. |
| Arms | Four-dimensional coordinated arms | Eight-dimensional arms with rear-pad tilt | How you hold devices decides which extra movement is useful. The count alone does not settle it. |
| Load rating | 330 lb | 330 lb | The same capacity does not make the seat dimensions or the fit identical. |
Trade-offs
What each pick costs you
With SIHOO Doro S100
- The UK enlarged-cushion listing describes a different fit range, so this comparison relies on US S100 dimensions.
With SIHOO Doro C300 Pro V2
- A footrest is not included with the selected standard C300 Pro V2.
Change of plan
When the answer changes
Your required seat setting falls below 16.9 inches
Go with SIHOO Doro S100. The shorter published range is S100’s.
The setting you need goes past 17.12 inches
Go with SIHOO Doro C300 Pro V2. The longer published range is C300’s.
Decision guide
Before you buy
On paper a chair can have plenty of adjustments and yet every available seat setting may be too long or too short for the person using it.
What this page can’t tell you
- Rounding may affect the published depth values. The small overlap is neither a precision fit guarantee nor a medical assessment.
By the numbers
What the data shows
What we found across the office chairs we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| SIHOO Doro S100 |
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| SIHOO Doro C300 Pro V2 |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
SIHOO Doro S100
A shorter front-to-back cushion position is what your seated fit calls for.
You are fine with the S100 upper-back adjustment and have no need for C300’s more elaborate arm mechanism.
See price & reviews on AmazonSIHOO Doro C300 Pro V2
Your seat depth has to go past S100’s published 17.12-inch maximum.
The separate 3D headrest and rear-pad arm tilt appeal to you for reclined device use.
See price & reviews on AmazonEach link opens in a new tab.
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