The Sihoo DORO-C300 Pro V2 suits sitters about 170–190 cm who switch between typing and leaning back. Its 8D armrests tilt down to stay level and clear the desk as you recline. Its lockable backrest glide follows you down by up to about 4 cm, but only once the backrest is raised off its lowest notch.
- Sihoo rates the DORO-C300 Pro V2 for users 150–190 cm tall and up to 150 kg, with automatic recline tension tuned for 40–100 kg.
- The seat is 52 cm wide and slides 4 cm, for a depth of 43–47 cm, per Sihoo's specifications.
- The backrest sits 52–60 cm above the seat across 7 notches and carries a Domino 2.0 lumbar pad with three firmness settings.
- Recline locks at 105°, 120° and 135°, and one version adds a pull-out footrest.
- The 8D armrests adjust height, depth and width, swivel 360° at the base joint, tilt up or down and follow the recline.
- The 3D headrest has 28% more support area than the previous version's, and the chair is tested to BIFMA, SGS and TÜV standards, according to Sihoo.
Last updated October 2026. Specifications checked October 2026.
Why doesn't the C300 Pro V2's glide work at the lowest backrest notch?
The Sihoo DORO-C300 Pro V2's glide can only lower the backrest as far as you've raised it, so at the lowest of its 7 notches there's no travel at all. Raise it and the SyncroFlex glide drops the whole backrest and lumbar pad by up to about 4 cm as you recline. This is the one thing to understand before you buy, because the glide is the chair's headline feature.
The stop comes from the curve at the base of the backrest frame: any lower, and the lumbar pad would hit it.
A small lever behind the backrest locks or frees the glide. Locked, the pad rides up your back as you recline; freed, it stays put through a small recline. The lock is new: the Sihoo DORO-C300 Pro Gen 1's lumbar pad slid on its own and couldn't be locked. Raising the backrest a notch or two restores the glide but lifts the pad too, so shorter sitters usually do better locking the glide and using the pad's three firmness settings.
Down frees the glide, up locks it.
Does the lumbar support keep up in a deep recline?
The Sihoo DORO-C300 Pro V2's lumbar pad keeps up only through the first part of the recline. Lean back further and it rides up 2–3 cm, opening a gap at the lower back. Your weight sets the recline tension automatically; the mechanism is ordinary rather than special, and it firms up a little near the end of its travel. Work at the 105° or 120° lock, and accept the gap when you lie back on the footrest version for a break; the footrest pulls out from under the seat and stows when you lift it to the top and let go.
One paddle does three jobs: lift for height, push for seat depth, turn back to release the recline.
Is the C300 Pro V2 right for people under 170 cm?
Under about 170 cm, sit in the Sihoo DORO-C300 Pro V2 before you buy: shorter sitters lose the glide and find the lumbar pad sits high.
| Height | What to expect | Our read |
|---|---|---|
| 150–159 cm | Below the size the chair is shaped around | Sit-test first |
| 160–164 cm | Headrest sits high even at its lowest; glide can't move | Weakest fit |
| 165–169 cm | Seat at its shallowest; lumbar only just reaches low enough | Usable, glide mostly lost |
| 170–179 cm | Backrest can rise a notch or two, so the glide starts working | Where the fit starts |
| 180–189 cm | Lumbar and headrest line up; seat just long enough | Good fit |
| 190 cm and over | Above Sihoo's range | See big and tall office chairs |
Below 170 cm, set the backrest to its lowest notch, the lumbar pad to its most forward setting and the seat to its shallowest 43 cm. If the pad still misses your lower back, the chair is too big for you. The smaller, softer Gen 1 is the one to compare it with; both are on the floor at our Sydney and Melbourne showrooms.
How does the C300 Pro V2 feel over a long day?
The Sihoo DORO-C300 Pro V2 feels firm and supportive over a long day, but very upright sitters should try it first. Its Cloud Mesh 2.0 is the Gen 1's mesh stretched tighter: firmer at first sit, less tiring over a long session. Put it on your list of mesh office chairs if soft cushions bother you.
Up close: pale strands in a black elastic weave. It feels firm rather than plush.
Sit fully upright and often only the lumbar area touches the backrest; the chair is happiest with a slight recline, although the V2's mid-back stands more upright than the Gen 1's. Bolt-upright typists should also sit in the Sihoo M57, a fixed-pivot mesh chair; our M57 vs C300 Pro V2 guide compares them, and our Sihoo M57 review covers its firm lumbar pad.
What do the 8D armrests do that other linked armrests don't?
The Sihoo DORO-C300 Pro V2's 8D arm pads tilt down, so they stay near level instead of rising into the desk as you recline. Linked armrests usually tip up at the front, the Gen 1's 6D arms included, and can catch a desk edge or drawer. Flip the V2's pad up to its stop and let it fall back, and it rests tilted slightly down.
Tilted down, the arm clears the desk edge, so the chair rolls in even while reclined.
The front can also tilt up and the rear section flip up, cradling the elbow when you lean back with a phone or controller. The arms follow the backrest as it reclines, and at full height the pads line up with a standard 75 cm desk.
There's no height lock, so a resting hand can nudge an arm up a notch. Even so, the arms are the best thing about this chair.
What changed from the Sihoo DORO-C300 Pro Gen 1?
The Sihoo DORO-C300 Pro V2 is bigger, firmer and more adjustable than the Gen 1, with a wider backrest, headrest and lumbar pad.
From behind: the wider backrest. The lumbar pad moves with its 7 height notches.
| Feature | DORO-C300 Pro V2 | DORO-C300 Pro (Gen 1) |
|---|---|---|
| Moving backrest | Whole backrest glides; a lever locks it | Lumbar pad slides on its own; can't lock |
| Backrest height | 7 notches over 8 cm; holds at the top | About 6 cm; drops back at the top |
| Armrests | 8D; pad tilts down, rear flips up | 6D; front rises when you recline |
| Headrest | 3D, 28% more support area (per Sihoo) | Smaller |
| Seat depth | 43–47 cm | 42.7–45.1 cm |
| Fit and weight | 150–190 cm, 150 kg | 152–190 cm, 150 kg |
Within Sihoo's DORO range, the Gen 1 is worth sitting in if you're under about 170 cm or like a softer, shallower seat. From about 170 cm, and for frequent recliners, the V2 fits better.
How does it compare with the UE FLOW 550 and LiberNovo Omni?
Against the UE FLOW 550, the Sihoo DORO-C300 Pro V2 wins on armrests and gives ground in a deep recline. Both are firm mesh chairs with similar support; the FLOW 550's arms sit lower, swivel less and don't tilt or follow the recline. The FLOW 550 answers with an armrest paddle for seat height and depth, and it tends to keep closer contact with the lower back when you lie well back, which is the Sihoo's weakest point.
The LiberNovo Omni Gen is the other chair to try. Its one-piece flexing backrest tends to stay closer to the lower back through a recline, though the padded surface runs warmer than mesh. Choose the Sihoo for mesh and more adjustable arms, the Omni for lower-back contact while reclined. Our Omni vs Sihoo DORO comparison has the specs.
What are the C300 Pro V2's real drawbacks?
Most of the Sihoo DORO-C300 Pro V2's drawbacks hit sitters under about 170 cm or people who lie right back.
- No glide at the lowest backrest notch, and about 4 cm at most above it.
- A gap still opens at the lower back in the deeper recline positions.
- Under about 170 cm: a high lumbar pad, a deep seat and possibly a headrest set too high.
- Sitting bolt upright, often only the lumbar area touches.
- Arms can be nudged up a notch; lowering anything means lifting it to the top first.
- It's a recent design, so there's little long-term wear history yet.
FAQ
Is the Sihoo DORO-C300 Pro V2 good for short people?
Sihoo lists 150–190 cm, but sitters under about 170 cm make the most compromises: at the lowest backrest notch the glide doesn't move, the lumbar pad sits high and the headrest may not reach the neck. Try the Sihoo DORO-C300 Pro V2 beside the smaller, softer Gen 1 first.
How far does the Sihoo DORO-C300 Pro V2 recline?
Sihoo lists a maximum recline of 135° for the DORO-C300 Pro V2, with lock positions at 105°, 120° and 135°. The footrest version lets you lie back for a break, but expect a gap to open at the lower back in the deepest positions.
Does the Sihoo C300 Pro V2's lumbar support move when you recline?
Yes, once the glide is switched on. The whole backrest and lumbar pad of the Sihoo DORO-C300 Pro V2 then slide down by up to about 4 cm as you recline, but only with the backrest raised at least one notch. The Domino 2.0 pad also has three firmness settings.
How do you lower the armrests on the Sihoo C300 Pro V2?
There's no release button. Lift the armrest notch by notch to the top, where it holds, then lift once more and it drops to the lowest setting. The Sihoo DORO-C300 Pro V2's backrest height works the same way, a step that's easy to miss on the first day.
What is the weight limit of the Sihoo DORO-C300 Pro V2?
Sihoo rates the DORO-C300 Pro V2 to 150 kg, but its automatic recline tension is tuned for 40–100 kg, so heavier sitters may find the recline on the light side. Above 100 kg, sit in it and compare chairs built for bigger frames first.
Where can you sit in the C300 Pro V2?
The Sihoo DORO-C300 Pro V2 is on the floor at our Sydney showroom (Unit 11, 46-50 Wellington Rd, South Granville NSW) and our Melbourne showroom (Shop 1a/280 Whitehorse Rd, Nunawading VIC), alongside the rest of the Sihoo range and chairs from Herman Miller, LiberNovo, UE and HBADA, so you can compare them side by side. Book a visit or simply walk in during opening hours; our specialists Mick, Donald, Garrett and Kevin can set the backrest, lumbar pad and arms to your height while you sit. Under 170 cm, try the V2 and Gen 1 back to back, each backrest at its lowest notch. We deliver across Australia.
