Chairs · Comparison
FlexiSpot C7 vs SIHOO Doro C300: from typing to reading
Find the seat and support that suit the switch from typing to reading, with the fit issues worth catching before you order.
The quick decision
Which option fits your day?
Choose C7 foam if you want a cushioned seat and control over its position. Choose original C300 for mesh and arms that move with recline. Let desk access and headrest fit settle the final choice.
FlexiSpot C7
A cushioned seat with control over where its front edge meets your legs; mesh is also available.
SIHOO Doro C300
Arm support that follows you into a recline, paired with a mesh seat.
- Arms and headrest can get in the way of the position you prefer
- Confirm the exact controls and assembled-chair return terms
Research-based guide. DeskSpaceLab has not tested these products head to head. Sources and review scope

Pull in to answer a few emails. Later, lean back with a document you want to read properly. A chair has to suit that change of pace as well as the seat you enjoy.
C7: keep the cushion, change the position
If a cushioned seat is already your preference, start with C7 foam. You can keep that familiar kind of seating while exploring more control over where the seat sits in front of the backrest. There is also a mesh C7; foam is a choice within the range.
The seat slide matters when you want to change where the front edge meets your legs without moving away from the backrest. FlexiSpot also describes adaptive lumbar support with forward-and-back adjustment. Together, those controls make C7 worth exploring if you like to set the chair around your preferred sitting position.
The ordinary C7 page contains several versions. Look for the seat material and those specific controls on the chair you select.
If foam and a seat slide are the changes you want, investigate the C7 configuration that provides them.
View FlexiSpot C7 at FlexiSpot
Manufacturer link, not an affiliate link.
Original C300: let the arms come with you

C300's armrests move with the backrest as you recline, a useful connection when you settle back to read away from the keyboard.
The seat and back are mesh. If that is the surface you prefer, C300 puts it together with the coordinated arms. Choose Standard for the chair alone, or Footrest if you want to put your feet up during breaks.
Both chairs describe adaptive lumbar support. An independent lumbar-position or pressure control, and a seat slide, are not established for the US C300 you would receive. If you need one of those movements, have SIHOO confirm it before choosing.
For a mesh seat and armrests that move as you recline, consider the original Doro C300.
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A good seat can still be the wrong fit
Armrests have to let you reach the desk, and the headrest has to meet you in a useful place. MobileSyrup's Jonathan Lamont liked his foam C7's seat and airy back, yet its arms hit his desk and its headrest moved down under pressure. Notebookcheck's C300 testers liked the support and reclining breaks, but the arm pads rotated too easily; the longer-torso tester's shoulders met the headrest, while the other tester avoided that problem. These are reasons to check your own desk approach and headrest fit, not a prediction that either chair will suit you.
Returns matter because those questions may remain open until the chair is assembled. SIHOO's policy contains both unused-condition wording and normal-use fit-return language. Ask how the selected chair can be returned, who pays shipping and what packaging must be retained. Get the same clarity from FlexiSpot; a free assembled trial is not established for either choice.
Let the missing feature decide
Use the C7 guide to examine the seat and support controls, or the original C300 guide to look more closely at its mesh seat and linked arms. If your current chair already suits both parts of your day, there may be no reason to replace it.
Considering the newer Doro C300 Pro V2? Our separate C7 vs C300 Pro V2 comparison helps you choose around seat material and the controls you will use. The comparison above concerns the original C300.
Sources and review scope
US scope: ordinary C7 and original C300; C7 Max, Morpher and Pro Max, and C300 Pro, Pro V2 and Ultra are separate. FlexiSpot C7 and SIHOO original C300 pages were checked October 22, 2026. SIHOO returns were read October 22; substantive FlexiSpot return clauses retain the October 12 reading. Manufacturer descriptions establish features, not our comfort results.
Jonathan Lamont, MobileSyrup, February 23, 2025: several months with an earlier Canadian foam C7 offered for trial by FlexiSpot; full commercial terms unknown. Marcus Schwarten, Notebookcheck, November 27, 2025; updated October 5, 2026: original C300 Footrest, two testers, manufacturer-supplied sample and affiliate links disclosed; test duration unspecified. Both reviews were rechecked October 22. Different units and contexts, not a head-to-head test; DeskSpaceLab has not tested either chair.
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