The catch
SIHOO B300 Pro
Without a footrest, the linked B300 Pro is the standard version, and its seat is narrower than C300 Pro V2.
Side by side
SIHOO B300 Pro vs C300 Pro V2: B300 goes shorter still, C300 adds seat width and tilting arm pads
Quick verdict
B300 Pro is the choice when the shorter minimum seat depth or flip-up arms solve your fit problem. B300 starts at 16.5 inches of seat depth, against 16.9 on C300 Pro V2. C300 Pro V2 is the choice when its 20.5-inch seat width and rear-pad tilt help your seated position and handheld devices. B300’s seat is 19.1 inches wide. Both reach 18.5 inches of depth and use weight-responsive recline. Neither linked standard package includes a footrest.
Before you buy
Why, and what it costs you
A wider seat can bring the wrong minimum depth with it
In a household, a user who wants more hip room may share with another who needs a shorter seat. C300 Pro V2 adds 1.4 inches of published width, but its minimum depth is 0.4 inches longer. B300 retracts farther and still reaches the same 18.5-inch maximum. If both will share the chair, try the shorter user first. Width and depth are separate fit constraints, so a larger-looking seat does not automatically solve both.
Where this comes from
Seat width: 20.5 minus 19.1 equals 1.4 inches. Minimum depth: 16.9 minus 16.5 equals 0.4 inches. Published seat width is not the same as inner-arm clearance.
The catch
SIHOO Doro C300 Pro V2
Even if the extra seat width is welcome, the 16.9-inch minimum depth may be too long.
SIHOO B300 Pro
- Why pick it
- A seat that goes below the C300 Pro V2’s published 16.9-inch minimum is what you need.
- Your room setup makes flip-up arms and a lower chair weight matter.
- The catch
- Without a footrest, the linked B300 Pro is the standard version, and its seat is narrower than C300 Pro V2.
SIHOO Doro C300 Pro V2
- Why pick it
- The extra published seat width is something you need, and you have checked arm spacing as well.
- Support is easier to find with tilting rear arm pads when you hold a controller or phone.
- The catch
- Even if the extra seat width is welcome, the 16.9-inch minimum depth may be too long.
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What this page compares
A shared desk, controller use and limited space frame this comparison of B300 Pro and C300 Pro V2. Look at the fit ranges, arm movements and weight that change daily handling.
Adjustable depth, automatic resistance and movable arms come together in these SIHOO mesh chairs. What is worth comparing is the size and movement each user needs. The six-dimensional and eight-dimensional labels tell you little.
Which one fits
Pick the situations that sound like you
Minimum depth must be below 16.9 inches
Try the real fit. B300 goes down to 16.5 inches.
- SIHOO B300 Pro
- Better fit
- SIHOO Doro C300 Pro V2
- Caution
The wider published seat is needed
Check arm spacing separately. C300 lists 20.5 inches against 19.1.
- SIHOO B300 Pro
- Caution
- SIHOO Doro C300 Pro V2
- Better fit
Want rear pads that tilt for handheld devices
That specific arm movement is documented for C300.
- SIHOO B300 Pro
- Caution
- SIHOO Doro C300 Pro V2
- Better fit
A staircase installation needs planning
Both need safe handling, though B300 is lighter by the published figures.
- SIHOO B300 Pro
- Better fit
- SIHOO Doro C300 Pro V2
- Caution
In practice
Differences you will notice
A wider seat can bring the wrong minimum depth with it
In a household, a user who wants more hip room may share with another who needs a shorter seat. C300 Pro V2 adds 1.4 inches of published width, but its minimum depth is 0.4 inches longer. B300 retracts farther and still reaches the same 18.5-inch maximum. If both will share the chair, try the shorter user first. Width and depth are separate fit constraints, so a larger-looking seat does not automatically solve both.
How we worked this out
Seat width: 20.5 minus 19.1 equals 1.4 inches. Minimum depth: 16.9 minus 16.5 equals 0.4 inches. Published seat width is not the same as inner-arm clearance.
Arms have different jobs when clearing the desk and when supporting a controller
The flip-up arms on B300 can clear an apron or open up room at the side. C300 Pro V2 can swing its arms aside too, so desk clearance by itself does not make B300 uniquely suitable. What C300 adds is rear-pad tilt, which may help if you hold a controller or phone with the forearms angled upward. Try that position while seated. An eight-dimensional label does not guarantee better support, yet this particular pad movement is relevant to a work-and-gaming desk.
How we worked this out
Desk clearance and handheld-device use are set against the documented arm movements. No benefit in grip strength, fatigue or comfort is claimed.
The weight of the heavier chair matters more on stairs than for rolling
Plan around the published 15.94 lb weight difference if the chair has to go upstairs to a bedroom office or travel in a house move. That difference says nothing about how hard either chair rolls across carpet, where caster type, floor surface and load also count. B300 has less mass to handle than C300 Pro V2, but both are bulky assemblies. Line up suitable help and do not take the lighter specification as permission to lift alone.
How we worked this out
The math is 59.64 minus 43.7 equals 15.94 lb, from manufacturer chair weights and not carton mass. No inference is made about rolling force or individual lifting capacity.
Option A
SIHOO, Black standard, without footrest
B300 Pro
A seat that goes below the C300 Pro V2’s published 16.9-inch minimum is what you need.
- Best for
- A seat that goes below the C300 Pro V2’s published 16.9-inch minimum is what you need.
Facts we checked
- Seat depth: 16.5 to 18.5 inches
- Seat width: 19.1 inches
- Arm movements: Six-dimensional arms with flip-up clearance
- Chair weight: 43.7 lb
Option B
SIHOO, Black, Standard
Doro C300 Pro V2
The extra published seat width is something you need, and you have checked arm spacing as well.
- Best for
- The extra published seat width is something you need, and you have checked arm spacing as well.
Facts we checked
- Seat depth runs 16.9 to 18.5 inches
- Seat width of 20.5 inches
- Arm movements: Eight-dimensional arms with rear-pad tilt and swing-away movement
- Chair weighs 59.64 lb
Spec by spec
Where they really differ
| Spec | SIHOO B300 Pro | SIHOO Doro C300 Pro V2 | In practice |
|---|---|---|---|
| Seat depth | 16.5 to 18.5 inches | 16.9 to 18.5 inches | At the shorter end B300 gains 0.4 inches, and the published maximum is the same. |
| Seat width | 19.1 inches | 20.5 inches | The 1.4 inches of published seat width that C300 adds may not be the same gain between the arms. |
| Arm movements | Six-dimensional arms with flip-up clearance | Eight-dimensional arms with rear-pad tilt and swing-away movement | Clearing space is possible on both, and C300’s pad tilt is a separate handheld-device option. |
| Chair weight | 43.7 lb | 59.64 lb | By the manufacturer figures, C300 weighs 15.94 lb more. That is not a measure of rolling effort. |
| Recline | Weight-responsive, 105/120/135-degree locks | Weight-responsive, 105/120/135-degree locks | The larger chair is not justified on its own by automatic resistance and the listed angles. |
Trade-offs
What each pick costs you
With SIHOO B300 Pro
- Lower weight is no guarantee of safe handling, since a 43.7 lb chair can still be awkward to lift.
With SIHOO Doro C300 Pro V2
- Assembly and stair handling need their own plan, separate from everyday rolling, and the manufacturer chair weight is 59.64 lb.
Change of plan
When the answer changes
Fit comes down to the shorter minimum seat setting
Go with SIHOO B300 Pro. B300 retracts farther by 0.4 inches.
Priorities are seat width and upward forearm support
Go with SIHOO Doro C300 Pro V2. A fit trial is still needed, but C300 offers the wider seat and tilting rear pads.
Decision guide
Before you buy
The chair has to be roomy enough for one user without leaving the seat too long for the other, and it also has to work for evening gaming.
What this page can’t tell you
- Nothing here ranks chairs on medical benefit, comfort or durability. Usable inner clearance is not guaranteed by published dimensions.
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 B300 Pro |
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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 B300 Pro
A seat that goes below the C300 Pro V2’s published 16.9-inch minimum is what you need.
Your room setup makes flip-up arms and a lower chair weight matter.
See price & reviews on AmazonSIHOO Doro C300 Pro V2
The extra published seat width is something you need, and you have checked arm spacing as well.
Support is easier to find with tilting rear arm pads when you hold a controller or phone.
See price & reviews on AmazonEach link opens in a new tab.
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