Main trade-off
SIHOO Doro S100
Its shorter maximum seat depth may not suit a longer seated leg length.
Head-to-head
SIHOO S100 vs B300 Pro: S100 reaches shorter seat settings, B300 flips the arms away
The short answer
Choose S100 when a shorter seat is the deciding requirement. S100 has the shorter minimum seat depth at 15.15 inches, against B300 Pro’s 16.5. Choose B300 Pro 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 choose
The reasoning and the trade-offs
A shorter seat and a tidier parked chair can point in opposite directions
In a small bedroom office, B300’s flip-up arms are attractive because the chair may push closer to the desk after work. But a user needing a seat shorter than 16.5 inches should start with S100’s range instead. The furniture benefit cannot correct a front edge that is too far forward while seated. Measure the sitting position first and the parking position second. If both fit, the arm-clearance feature becomes a meaningful convenience.
What this is based on
Different depth minima crossed with desk parking. 16.5 minus 15.15 equals 1.35 inches. No guarantee that either whole chair clears a particular desk.
Main trade-off
SIHOO B300 Pro
The minimum depth is longer, and the linked standard package has no footrest.
SIHOO Doro S100
- Choose it for
- You need a shorter seat setting than B300’s published minimum.
- S100’s split lumbar and upper-back arrangement suit you after a fit trial.
- Main trade-off
- Its shorter maximum seat depth may not suit a longer seated leg length.
SIHOO B300 Pro
- Choose it for
- Flip-up arms help clear the desk between uses.
- You need more seat depth or want separate lumbar depth and height controls.
- Main trade-off
- The minimum depth is longer, and the linked standard package has no footrest.
About this comparison
Doro S100 vs B300 Pro for a compact shared office. Compare the usable seat range, arm clearance and lumbar controls before choosing a mesh chair.
Both are SIHOO mesh chairs with adjustable depth, but the B300’s newer arm and lumbar controls do not replace the S100’s shorter published seat settings.
Winner by situation
Start with what you need it to do
Need depth below 16.5 inches
S100 reaches shorter settings.
- SIHOO Doro S100
- Better fit
- SIHOO B300 Pro
- Caution
Need depth beyond 17.12 inches
B300 extends farther.
- SIHOO Doro S100
- Caution
- SIHOO B300 Pro
- Better fit
Want documented flip-up arms
B300 explicitly includes that movement.
- SIHOO Doro S100
- Caution
- SIHOO B300 Pro
- Better fit
Expect the standard package to include a footrest
Neither selected package includes one.
- SIHOO Doro S100
- Caution
- SIHOO B300 Pro
- Caution
What matters in practice
The differences that matter
A shorter seat and a tidier parked chair can point in opposite directions
In a small bedroom office, B300’s flip-up arms are attractive because the chair may push closer to the desk after work. But a user needing a seat shorter than 16.5 inches should start with S100’s range instead. The furniture benefit cannot correct a front edge that is too far forward while seated. Measure the sitting position first and the parking position second. If both fit, the arm-clearance feature becomes a meaningful convenience.
How we reached this conclusion
Different depth minima crossed with desk parking. 16.5 minus 15.15 equals 1.35 inches. No guarantee that either whole chair clears a particular desk.
Dynamic lumbar movement does not replace a projection setting
S100’s split lumbar panels move with the user. B300 also allows the user to change the lumbar position in height and depth. If two people want contact in a similar place but disagree about how far the pad projects, B300’s depth control is the relevant feature to try. It does not prove the pad will feel gentler. S100 may still feel preferable in person, but its dynamic-panel description alone does not establish the same user-selected adjustment.
How we reached this conclusion
Positive documented depth control crossed with different contact preferences. No claim that undocumented S100 mechanisms are absent beyond the verified controls.
The longer slider matters when the chair changes hands
B300 extends to 18.5 inches while S100 ends at 17.12, a 1.38-inch difference in the published maxima. That can matter when one partner needs more thigh support and the other needs a shorter setting. Their common published interval is 16.5 to 17.12 inches. Check both users against the whole range rather than selecting solely for the taller person or the newer model name.
How we reached this conclusion
18.5 minus 17.12 equals 1.38 inches. Shared interval 16.5 to 17.12. No standing-height-to-fit conversion.
Choice A
SIHOO, US Black, polished base
Doro S100
You need a shorter seat setting than B300’s published minimum.
- Best matched use
- You need a shorter seat setting than B300’s published minimum.
Checked facts
- 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
Choice B
SIHOO, Black standard, without footrest
B300 Pro
Flip-up arms help clear the desk between uses.
- Best matched use
- Flip-up arms help clear the desk between uses.
Checked facts
- 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
Meaningful differences
What changes the fit
| What changes | SIHOO Doro S100 | SIHOO B300 Pro | Why it matters |
|---|---|---|---|
| Seat depth | 15.15 to 17.12 inches | 16.5 to 18.5 inches | S100 reaches 1.35 inches shorter, while B300 extends 1.38 inches farther. |
| Arm clearance | Four-dimensional coordinated arms | Six-dimensional arms with flip-up movement | B300 documents a way to move the arm structure upward and aside. |
| Lumbar control | Split dynamic panels | Separate 2-inch height and 0.8-inch depth adjustment | Contact movement and user-selected projection answer different preferences. |
| Linked package | Black US chair without footrest | Black standard chair without footrest | Neither button selects a footrest bundle. |
What you give up
Every choice has a cost
If you choose SIHOO Doro S100
- Do not use dimensions from a UK enlarged-cushion S100 listing.
If you choose SIHOO B300 Pro
- Measure the base and back as well as the folded arms before assuming the chair will park under a desk.
Recommendation switch
The decision flips if...
A shorter minimum seat setting is essential
Choose SIHOO Doro S100. S100 has the shorter published range.
The seat fits and flip-up clearance or lumbar depth is the missing feature
Choose SIHOO B300 Pro. B300 documents those additional controls.
What matters in practice
Before you choose
You want the chair to tuck out of the way, yet making it fit the furniture should not take priority over making the seat fit your legs.
What this comparison cannot tell you
- No medical, cooling or subjective comfort claim. Published fit ranges are not a guarantee for a particular body.
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.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| SIHOO Doro S100 |
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| SIHOO B300 Pro |
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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 S100
You need a shorter seat setting than B300’s published minimum.
S100’s split lumbar and upper-back arrangement suit you after a fit trial.
See price & reviews on AmazonSIHOO B300 Pro
Flip-up arms help clear the desk between uses.
You need more seat depth or want separate lumbar depth and height controls.
See price & reviews on AmazonLinks open in a new tab.