Sihoo A3 DORO-C300 Pro Ergonomic Office Chair
Sihoo A3 Doro C300 Pro Ergonomic Office Chair
Domino 3D lumbar support • 6D armrests • Full‑mesh design • 138° recline • 5‑year warranty
Description
The ultimate ergonomic office chair with Domino 3D lumbar support, fully adjustable 6D armrests, and cloud‑soft full‑mesh breathability—designed for unparalleled comfort and posture health.
Features
- Domino 3D lumbar support: Genius, sculpted pads adapt to your spine for dynamic back relief.
- 6D armrests: Height, depth, width, tilt & rotate—linked to the backrest for seamless support.
- 3D wide‑angle mechanical headrest: Tailors neck & head support through five positions.
- Full‑mesh “cloud web” design: Ultra‑durable, elastic fabric ensures breathability and lasting comfort.
- 138° gravity‑sensing recline: Automatically adjusts tension to your body weight for smooth lean‑back.
- One‑touch seat slider & height: Effortlessly fine‑tune seat depth and height to your ideal posture.
Quality & Certifications
5‑year warranty on mechanical parts- BIFMA & SGS certified
- German Design Award 2023
- Supports up to 136 kg
Specifications
| Lumbar Support | Domino 3D adjustable |
|---|---|
| Armrests | 6D fully adjustable |
| Headrest | 3D mechanical wide‑angle |
| Material | Full mesh “cloud web” |
| Recline | Up to 138° gravity‑sensing chassis |
| Seat Slider | One‑touch adjustable |
| Height | Gas‑lift adjustable |
| Warranty | 5 yr parts, 3 yr mesh |
| Domino Lumbar Support | 3D adjustable “pillow” design |
|---|---|
| Armrests | 6D fully adjustable |
| Headrest | 3D mechanical wide‑angle |
| Material | Full mesh “cloud web” cloth |
| Recline | Up to 138°, gravity‑sensing chassis |
| Seat Slider | One‑touch adjustable |
| Seat Height | Gas‑lift adjustable |
| Warranty | 5 yr parts (3 yr mesh) |
Warranty
We stand behind the Sihoo Doro C300 Pro with a comprehensive 5‑year warranty on all mechanical components, and a 3‑year warranty on the mesh.
What’s Covered:
- Domino 3D lumbar support & dynamic adjustments
- 6D fully adjustable armrests & headrest
- Chair frame & overall workmanship
Should any issue arise, our friendly support team will work with you to resolve it quickly—replacement parts or service, whichever you need, so you can get right back to peak comfort.
Delivery
We process orders within 1–2 business days. Standard delivery across Australia takes 3–7 business days. Once your Sihoo Doro C300 Pro ships, you’ll receive a tracking link to follow its journey.
For special delivery requests or international shipping, our dedicated team is ready to assist. Every chair is carefully packaged to ensure it arrives in pristine condition.
Installation
- Unpack Carefully: Lay out all parts on a clean surface.
- Insert Casters: Push each wheel firmly into the base sockets.
- Install Gas Lift: Seat the gas piston into the center of the base.
- Attach Seat Plate: Align and screw the metal plate to the bottom of the seat.
- Mount Backrest: Slide the backrest brackets into the seat plate until they click.
- Fix Armrests (Pro Only): Bolt the 6D armrests into place on each side.
- Final Tighten: Ensure all screws are snug—no over‑tightening.
- Adjust & Enjoy: Test height, recline, lumbar and armrest positions to your preference.
Installation typically takes under 10 minutes. No special tools required beyond the included Allen key.
UpDown Desk has partnered with SIHOO, a global leader in ergonomic seating solutions.
As a company committed to supporting the health and wellbeing of office workers across Australia, it was essential for UpDown Desk to partner with a brand that shares our vision for high-quality, ergonomic office furniture.
With years of expertise in designing and manufacturing ergonomic chairs, SIHOO has become internationally recognised for combining innovative engineering with user comfort. Their chairs are purpose-built to promote better posture, reduce fatigue, and support productivity in both professional and home office environments.
Just like UpDown Desk, SIHOO places a strong emphasis on functionality and design—ensuring every chair not only looks modern but delivers exceptional comfort and support where it’s needed most. Together, we’re proud to offer a complete ergonomic solution that helps Australians work smarter and healthier every day.
thoughtful design—delivering an exceptional user experience.
As more Australians work from home or in flexible office environments, SIHOO ergonomic chairs are built to adapt—offering durability, comfort, and customisable support for every user. Each SIHOO chair is crafted with the highest standards of ergonomic design, safety, and sustainability, ensuring peace of mind with every purchase.
What sets SIHOO chairs apart:
- Recommended by health professionals to promote optimal posture, dynamic movement, and long-term comfort for better productivity.
- Award-winning design that blends smart technology, premium materials, and modern aesthetics to suit evolving workspaces.
- Trusted quality backed by warranty—with select models offering up to 10 years of coverage and reliable after-sales support, including return-to-base servicing and component replacement.
- Whether you're upgrading your home office or equipping your team, SIHOO helps you work smarter—and sit better.
20,000+ Happy Customers Across Australia
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