The catch
Branch Ergonomic Chair
Pad pivot is not among the documented 3D arm movements.
Side by side
Soji is the choice when you want the pads to pivot as your forearms change angle between typing and a handheld device. Soji adds arm-pad pivot to the height, width and depth movements it shares with the original Branch. Branch is the choice when its three-dimensional arms fit and being able to remove them helps with another activity. Seat depth and manual recline tension are adjustable on both. The linked Mist Soji does not establish the optional forward-tilt package.
Before you buy
The forearms do not have to sit at the same angle for typing and for holding a tablet. Pad height, width and depth can change on both chairs, and the selected Soji pivots the pads as well. That lets the support follow the second task without moving the whole chair. Branch may already be enough if your elbows stay in a similar position. Test the actual movement between tasks and ignore a generic four-versus-three adjustment count.
Where this comes from
Verified arm directions compared across two device positions. Nothing is assumed about an exact reach or comfort improvement.
The catch
Pad pivot is not among the documented 3D arm movements.
The catch
Whether the linked Mist package has the optional forward tilt should not be assumed.


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Original Branch Ergonomic Chair and Haworth Soji compared for typing, tablets and a desk that serves several jobs, looking at arm movement and the selected packages.
Both are task chairs with a padded seat and a mesh back, aimed at the same home-office job. Seat-depth and manual tension control come on both already, so arm behavior is the better place to start.
Which one fits
Pivot comes with the selected Soji.
Removal is documented for Branch. For Soji it was not established.
Both chairs come with them.
Neither linked configuration should be assumed to have it.
In practice
The forearms do not have to sit at the same angle for typing and for holding a tablet. Pad height, width and depth can change on both chairs, and the selected Soji pivots the pads as well. That lets the support follow the second task without moving the whole chair. Branch may already be enough if your elbows stay in a similar position. Test the actual movement between tasks and ignore a generic four-versus-three adjustment count.
Verified arm directions compared across two device positions. Nothing is assumed about an exact reach or comfort improvement.
Say you type during the day and play an instrument at the same desk later. A movable pad can still leave the arm structure in the way. Branch documents removable arms, and you can check that option against the assembly instructions. This research does not establish the same removal arrangement for the selected Soji, but that does not mean Soji cannot be modified. Pick Branch for this requirement only once you accept that removal may be a deliberate setup change and not a quick daily action.
Positive documentation of removability compared with a task the arms obstruct. How Soji removal works is unknown, and it is left unknown.
For seat depth, Soji publishes a range of 16.25 to 18.75 inches. Branch publishes an 18 to 22 inch figure, and the source reviewed here does not give a clear enough matching measurement basis. Subtracting those figures could make Branch look dramatically larger without proving usable sitting depth. Both have a slider, so try the shortest and longest usable positions with your back against the backrest. A clear unknown serves you better than a fit claim that looks precise but is unreliable.
The conflict in measurement basis is noted explicitly. No depth calculation across brands is performed.

Branch, Original, Pebble / White, no headrest
Your typing position is already served by three-dimensional arm movement.

Haworth, Mist
Keyboard and handheld-device work put your forearms at different angles.
Spec by spec
| Spec | Branch Ergonomic Chair | Haworth Soji | In practice |
|---|---|---|---|
| Arm directions | Height, width and depth | Height, width, depth and pivot in selected package | The pads can change angle through pivot, so the whole chair need not rotate. |
| Open side for other tasks | Documented removable arms | Arm removal is not established here | Lack of documentation does not prove something is impossible. For this requirement, Branch is the option that is verified. |
| Recline | Manual tension and synchronized tilt | Manual tension and upright lock | On both, the user controls resistance. |
| Seat depth | Adjustable, published measurement basis unclear | 16.25 to 18.75 inches | Try both, since the published measurements are unlike and cannot support a reliable depth subtraction. |
Trade-offs
Change of plan
Go with Haworth Soji. Soji brings pad pivot.
Go with Branch Ergonomic Chair. Branch has that option, depending on its assembly procedure.
Decision guide
Arm support while typing is the aim, though the same desk may also need open space for a tablet, instrument or another close task.
By the numbers
What we found across the office chairs we compare, plus the checked facts behind each finding.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Branch Ergonomic Chair |
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| Haworth Soji |
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Ready to buy
Open either model on Amazon for the current price, customer reviews and delivery options.

Your typing position is already served by three-dimensional arm movement.
Documented removable arms appeal to you for an occasional task that needs an open side.
See price & reviews on Amazon
Keyboard and handheld-device work put your forearms at different angles.
Pad pivot matters to you, as does keeping seat-depth and manual recline control.
See price & reviews on AmazonEach link opens in a new tab.
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