The catch
SIHOO Doro S100
Its maximum seat depth is shorter, which may not suit a longer seated leg length.
Side by side
SIHOO S100 vs B300 Pro: S100 goes to shorter seat settings, B300 flips its arms out of the way
Quick verdict
When a shorter seat is the deciding requirement, S100 is the choice, since S100 has the shorter minimum seat depth at 15.15 inches, against B300 Pro’s 16.5. B300 Pro is the choice for flip-up arms, a longer 18.5-inch maximum seat setting or separate lumbar height and depth adjustment. S100 tops out at 17.12 inches. The linked B300 is the standard version without a footrest, and folding its arms does not shrink the base.
Before you buy
Why, and what it costs you
A shorter seat and a tidier parked chair can work against each other
B300’s flip-up arms appeal in a small bedroom office because the chair may push closer to the desk after work. A user who needs a seat shorter than 16.5 inches should start with S100’s range, though. The furniture benefit cannot correct a front edge that sits too far forward while seated. Measure the sitting position first and the parking position second. When both fit, the arm-clearance feature becomes a meaningful convenience.
Where this comes from
Different depth minima set against desk parking. 16.5 minus 15.15 equals 1.35 inches. Whether either whole chair clears a particular desk is not guaranteed.
The catch
SIHOO B300 Pro
Its minimum depth is longer, and no footrest comes in the linked standard package.
SIHOO Doro S100
- Why pick it
- Your seat setting has to be shorter than B300’s published minimum.
- After a fit trial, S100’s split lumbar and upper-back arrangement works for you.
- The catch
- Its maximum seat depth is shorter, which may not suit a longer seated leg length.
SIHOO B300 Pro
- Why pick it
- Clearing the desk between uses is easier with flip-up arms.
- More seat depth, or separate lumbar depth and height controls, is what you need.
- The catch
- Its minimum depth is longer, and no footrest comes in the linked standard package.
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What this page compares
A compact shared office is the setting for Doro S100 and B300 Pro. Compare the usable seat range, arm clearance and lumbar controls before you choose a mesh chair.
Adjustable depth is shared by these SIHOO mesh chairs, but the newer arm and lumbar controls on the B300 do not replace the shorter published seat settings of the S100.
Which one fits
Pick the situations that sound like you
Depth has to go below 16.5 inches
Shorter settings come with S100.
- SIHOO Doro S100
- Better fit
- SIHOO B300 Pro
- Caution
Depth must go beyond 17.12 inches
B300 stretches farther.
- SIHOO Doro S100
- Caution
- SIHOO B300 Pro
- Better fit
Documented flip-up arms are wanted
That movement is explicitly included on B300.
- SIHOO Doro S100
- Caution
- SIHOO B300 Pro
- Better fit
Assume a footrest comes with the standard package
One is not included in either selected package.
- SIHOO Doro S100
- Caution
- SIHOO B300 Pro
- Caution
In practice
Differences you will notice
A shorter seat and a tidier parked chair can work against each other
B300’s flip-up arms appeal in a small bedroom office because the chair may push closer to the desk after work. A user who needs a seat shorter than 16.5 inches should start with S100’s range, though. The furniture benefit cannot correct a front edge that sits too far forward while seated. Measure the sitting position first and the parking position second. When both fit, the arm-clearance feature becomes a meaningful convenience.
How we worked this out
Different depth minima set against desk parking. 16.5 minus 15.15 equals 1.35 inches. Whether either whole chair clears a particular desk is not guaranteed.
A projection setting is not replaced by dynamic lumbar movement
The split lumbar panels on S100 move with the user. B300 also lets the user change the lumbar position in height and depth. When two people want contact in a similar place but disagree on how far the pad projects, B300’s depth control is the feature to try. That does not prove the pad will feel gentler. S100 may still feel better in person, but its dynamic-panel description alone does not establish the same user-selected adjustment.
How we worked this out
Different contact preferences are set against positively documented depth control. This does not claim that undocumented S100 mechanisms are absent beyond the verified controls.
When the chair changes hands, the longer slider counts
The published maxima show a 1.38-inch difference, with B300 extending to 18.5 inches and S100 ending at 17.12. That can matter when one partner needs more thigh support and the other needs a shorter setting. The published interval they share is 16.5 to 17.12 inches. Check both users against the whole range instead of choosing only for the taller person or the newer model name.
How we worked this out
Maxima gap: 18.5 minus 17.12 equals 1.38 inches. The shared interval is 16.5 to 17.12. Standing height is not converted to fit.
Option A
SIHOO, US Black, polished base
Doro S100
Your seat setting has to be shorter than B300’s published minimum.
- Best for
- Your seat setting has to be shorter than B300’s published minimum.
Facts we checked
- Seat depth: 15.15 to 17.12 inches
- Arm clearance: Four-dimensional coordinated arms
- Lumbar control: Split dynamic panels
- Linked package: Black US chair without footrest
Option B
SIHOO, Black standard, without footrest
B300 Pro
Clearing the desk between uses is easier with flip-up arms.
- Best for
- Clearing the desk between uses is easier with flip-up arms.
Facts we checked
- Seat depth: 16.5 to 18.5 inches
- Arm clearance: Six-dimensional arms with flip-up movement
- Lumbar control: Separate 2-inch height and 0.8-inch depth adjustment
- Linked package: Black standard chair without footrest
Spec by spec
Where they really differ
| Spec | SIHOO Doro S100 | SIHOO B300 Pro | In practice |
|---|---|---|---|
| Seat depth | 15.15 to 17.12 inches | 16.5 to 18.5 inches | B300 extends 1.38 inches farther, while S100 gets 1.35 inches shorter. |
| Arm clearance | Four-dimensional coordinated arms | Six-dimensional arms with flip-up movement | A way to move the arm structure upward and aside is documented for B300. |
| Lumbar control | Split dynamic panels | Separate 2-inch height and 0.8-inch depth adjustment | Different preferences are answered by contact movement and by user-selected projection. |
| Linked package | Black US chair without footrest | Black standard chair without footrest | A footrest bundle is not chosen by either button. |
Trade-offs
What each pick costs you
With SIHOO Doro S100
- Dimensions from a UK enlarged-cushion S100 listing should not be used.
With SIHOO B300 Pro
- Before assuming the chair will park under a desk, measure the base and back along with the folded arms.
Change of plan
When the answer changes
The minimum seat setting has to be shorter
Go with SIHOO Doro S100. The shorter published range belongs to S100.
Flip-up clearance or lumbar depth is what is missing, since the seat already fits
Go with SIHOO B300 Pro. Those additional controls are documented for B300.
Decision guide
Before you buy
A chair that tucks out of the way is the aim, but fitting it to the furniture should not outrank fitting the seat to your legs.
What this page can’t tell you
- No medical, cooling or subjective comfort claim is made. A published fit range does not guarantee anything for a particular body.
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 B300 Pro |
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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
Your seat setting has to be shorter than B300’s published minimum.
After a fit trial, S100’s split lumbar and upper-back arrangement works for you.
See price & reviews on AmazonSIHOO B300 Pro
Clearing the desk between uses is easier with flip-up arms.
More seat depth, or separate lumbar depth and height controls, is what you need.
See price & reviews on AmazonEach link opens in a new tab.
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