Three chairs in our range move with you rather than waiting to be adjusted: the LiberNovo Omni, the Sihoo DORO-S300 and the Sihoo DORO-C300 Pro V2. The short answer: buy the Omni if you want a motorised lumbar you control from the armrest and a foam seat; buy the S300 if a deep, weightless recline is what you are after in a mesh chair; buy the C300 Pro V2 if you want the most mechanism for the least money and a seat that slides.
- LiberNovo Omni: motorised 50 mm lumbar driven from the armrest, OmniStretch five-minute cycle, eight-panel Bionic FlexFit backrest, recline locks at 105°, 120°, 135° and 160°, foam seat, 136 kg (BIFMA X5.1), fits 153–186 cm.
- Sihoo DORO-S300: anti-gravity recline mechanism, two independent dynamic lumbar pads, 6D arms, five backrest heights, four-spring seat suspension, full mesh, fits 150–190 cm. Also available with a footrest.
- Sihoo DORO-C300 Pro V2: tracking lumbar that slides with your centre of gravity, recline tension that calibrates to your weight, 8D arms, 4 cm seat slide, full mesh, 150 kg, fits 150–190 cm. Also available with a footrest.
- Warranty: LiberNovo five years on the frame and two on the motor and electronics; Sihoo three years. All handled through Aussie Chair, an authorised dealer for both brands.
Last updated October 2026. Specifications checked October 2026; current pricing is on each product page.
LiberNovo Omni vs Sihoo DORO-S300 vs DORO-C300 Pro V2 at a glance
| LiberNovo Omni | Sihoo DORO-S300 | Sihoo DORO-C300 Pro V2 | |
|---|---|---|---|
| What moves | Motorised lumbar (50 mm) on an armrest button; OmniStretch cycle; eight-panel backrest flexes with you | Anti-gravity recline; two lumbar pads move independently; four-spring seat suspension | Lumbar slides down with your centre of gravity on recline; backrest glides (SyncroFlex); tension auto-calibrates |
| Seat | Zoned multi-density foam, 48 cm depth (Australian stock) | Full mesh, Italian-velvet-feel weave with DuPont TPEE elastomer | Full mesh, 4 cm seat slide |
| Armrests | 4D | 6D, synchronised with recline | 8D bionic |
| Recline | Locks at 105°, 120°, 135°, 160° | Anti-gravity mechanism; lumbar angle 90–105° | To 135°, locks at 105°, 120°, 135°; tension calibrates for 40–100 kg |
| Headrest | Hydrophilic memory foam, height and depth adjustable | Adjustable | Ultra-wide 3D |
| Power | 2,200 mAh battery, USB-C; about 30 days per charge at one stretch cycle a day | None | None |
| Weight rating / fit | 136 kg (BIFMA X5.1; 110 kg under EN 1335); 153–186 cm | BIFMA and SGS certified; 150–190 cm; rating on product page | 150 kg, BIFMA, SGS and TÜV; 150–190 cm |
| Colours | Space Grey, Starship Grey, Midnight Black, Moss Green | Black, Grey | Black, Grey |
| Warranty | 5 years frame, 2 years motor and electronics | 3 years | 3 years |
Three different ideas of "dynamic"
These chairs are often shopped together because all three are sold as chairs that move with you, but they move in different ways and that decides who each one suits.
The LiberNovo Omni is the powered one. A 50 mm actuator moves the lumbar in and out when you press a button on the armrest, so you change how firmly the chair holds your lower back without reaching behind you, and OmniStretch walks the lumbar slowly through its full travel for five minutes to mobilise your back while you keep working. Around that motor sits an eight-panel backrest that flexes as you shift and a foam seat. It is the chair for someone who wants to actively change their support through the day.
The Sihoo DORO-S300 is the recliner. Its anti-gravity mechanism makes leaning back feel weightless rather than like falling, two lumbar pads move independently so one side can follow you when you lean on an elbow, and the seat sits on four springs. It is the chair for someone who thinks and takes calls reclined, in mesh.
The Sihoo DORO-C300 Pro V2 is the tracker. Its lumbar pad slides down as you recline so the support stays at your sacrum, the backrest glides with you, and the recline tension sets itself to your weight. Nothing to charge, nothing to dial. It is the chair for someone who wants to sit down and have the chair get on with it.
Foam or mesh, and what that means in an Australian summer
The Omni is the only one of the three with a foam seat — zoned multi-density foam under stretch fabric — and that is its biggest comfort difference: softer, more anchored, warmer. Its backrest panels are fabric-over-foam too, so there is no airflow through the chair. If your room has no air conditioning and you sit through January, the two Sihoo mesh chairs are cooler, and the Omni Pro is LiberNovo's answer, with a fan under the seat. If you have always found mesh too firm on the sit bones, the Omni's seat is the reason to pay more.
Fit: who each chair is built for
LiberNovo rates the Omni range for 153–186 cm; the Omni is rated to 136 kg under BIFMA X5.1 (110 kg under the stricter EN 1335), and the Australian stock comes with the 48 cm extended seat only — three centimetres deeper than LiberNovo's standard seat — so shorter sitters should sit-test it before ordering. Both Sihoo chairs fit 150–190 cm and the C300 Pro V2 is rated to 150 kg; only the V2 has seat-depth adjustment, which matters most to people under about 165 cm. For anyone outside these ranges, our big and tall office chairs page covers the LiberNovo Maxis and Aeron Size C.
The honest trade-offs
Omni: the armrests move easily, which is helpful when setting them and irritating when you knock them; the backrest spine projects about 20 cm behind the chair, so check clearance against a wall; assembly takes longer than an ordinary chair; and the lumbar is motor-driven, so it cannot be adjusted if the electronics fail, which is why the motor carries a separate two-year warranty from the five-year frame. S300: the lumbar pads adjust through a narrow 90–105° angle and the seat has no depth slide; the weight rating is not published on our page, so check with us if you are over 120 kg. C300 Pro V2: recline tension cannot be set by hand — the auto-calibration is the only setting — and reviewers found the headrest sits on the shoulders of users above about 180 cm.
Is the Omni worth the extra over the Sihoo chairs?
Yes, if you want the powered lumbar and the stretch cycle — nothing in the Sihoo range does that — or if you want foam rather than mesh, or the extra colours. No, if you want the coolest chair, seat-depth adjustment, or the simplest route to a chair that still moves with you: the C300 Pro V2 does tracking lumbar, gliding backrest and auto-tension. The S300 sits between them for people who recline.
So which should you buy?
- You want to change lumbar firmness through the day from the armrest, and a daily stretch cycle: LiberNovo Omni.
- You prefer a foam seat to mesh: Omni.
- You recline to think and take calls, and want mesh: Sihoo DORO-S300.
- You want nothing to charge, nothing to dial, and a chair that still tracks you: Sihoo DORO-C300 Pro V2.
- Under 165 cm or shorter legs: C300 Pro V2, the only one with a seat slide.
- Hot room, no air conditioning: either Sihoo mesh chair, or the Omni Pro with its seat fan.
- Longest warranty: Omni, five years on the frame.
FAQ
Is the LiberNovo Omni better than the Sihoo DORO-C300 Pro V2?
They do different things. The Omni has a motorised lumbar you adjust from the armrest, a five-minute OmniStretch cycle and a foam seat. The C300 Pro V2 has a lumbar that slides with your centre of gravity, recline tension that calibrates to your weight, a 4 cm seat slide and a mesh seat. Choose the Omni for powered, user-controlled support and foam; choose the V2 for automatic support, mesh and seat-depth adjustment.
Which dynamic chair is best for reclining?
The Sihoo DORO-S300: its anti-gravity mechanism makes a deep recline feel weightless, and its two lumbar pads move independently to stay in contact as you lean. The LiberNovo Omni reclines further, to 160° at its Spine Flow lock, if a near-flat position matters more than the feel of the recline.
Does the LiberNovo Omni need charging?
Yes. It has a 2,200 mAh 12 V battery charged over USB-C in about 3 hours 40 minutes; LiberNovo quotes roughly 30 days between charges at one OmniStretch cycle a day. If you want a powered lumbar but never want to charge a chair, the manual Omni SE uses a screw dial instead; neither Sihoo chair has electronics.
Which of these chairs is best for a hot room?
Either Sihoo chair: the DORO-S300 and DORO-C300 Pro V2 are full mesh on seat and back, so air passes through. The Omni's foam seat and fabric backrest hold more heat; LiberNovo's Omni Pro adds a 4,000 rpm fan under the seat for exactly this reason.
What weight can these chairs hold?
The LiberNovo Omni is rated to 136 kg under BIFMA X5.1 (110 kg under EN 1335). The Sihoo DORO-C300 Pro V2 is rated to 150 kg and is BIFMA, SGS and TÜV certified. The DORO-S300 is BIFMA and SGS certified; its weight rating is on the product page. For heavier users the LiberNovo Maxis is rated to 181 kg.
Can I try all three before buying?
Yes. The LiberNovo Omni, Sihoo DORO-S300 and DORO-C300 Pro V2 are on the floor at our Sydney showroom (11/46-50 Wellington Rd, South Granville NSW 2142) and our Melbourne showroom (Shop 1A/280 Whitehorse Rd, Nunawading VIC 3131). Aussie Chair is an authorised dealer for both LiberNovo and Sihoo, with delivery across Australia and New Zealand.
Where to sit in them
All three are on the floor in Sydney (South Granville) and Melbourne (Nunawading), where you can also compare them with the Omni SE, Omni Pro, DORO-C500 and the Herman Miller range; book through our showrooms page. Read our 30-day LiberNovo Omni review, the Omni SE vs Gen vs Pro comparison and Sihoo M57 vs M57 Pro vs DORO-C300 Pro V2, or browse the LiberNovo and Sihoo ranges.
