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SIHOO M18 Ergonomics Task Office Chair
Engineered for everyday efficiency and long-lasting comfort, the Sihoo M18 Ergonomic Task Chair blends essential ergonomic features with intuitive design. Its breathable mesh back, dynamic lumbar support, and adjustable headrest offer tailored support through every task. With smooth recline functionality and height-adjustable 3D armrests, the M18 adapts to your workflow—whether you're powering through deadlines or sitting back to recharge. A trusted favourite for home offices and workspaces alike.

Sihoo M18 Pro Ergonomic Office Chair
Built for professionals who demand more, the Sihoo M18 Pro upgrades the classic M18 with refined functionality and enhanced ergonomics. Featuring upgraded lumbar support, a broader recline range, and a reinforced frame, this chair delivers superior comfort and durability for long hours at your desk. The M18 Pro also includes fine-tuned adjustability across the headrest, backrest, armrests, and seat depth—making it a top-tier choice for those who take workspace wellness seriously.
SIHOO M18 Ergonomics Task Office Chair $279.00$299.00$299.00$349.00 | Sihoo M18 Pro Ergonomic Office Chair $369.00$389.00 | |
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Why Sihoo M18 Series?
Ergonomic Support for Everyday Hustle
The SIHOO M18 is designed to keep up with your day—from back-to-back meetings to heads-down focus sessions. Its adaptive lumbar support, adjustable headrest, and 3D armrests promote healthy posture and reduce strain, so you can stay locked in without burning out.
Breathe Easy, Sit Smarter
Made with breathable mesh and a flexible, contoured backrest, the M18 keeps you cool and comfortable through long hours. It moves with your body—offering smooth recline, tilt tension control, and all the adjustability you need to find your perfect sitting position.
Form Meets Function, Beautifully
The M18 isn’t just built for comfort—it’s built to last. With premium materials, intuitive controls, and a clean, minimalist design, it’s a stylish upgrade to any workspace. You’ll feel the difference in every detail.
Smart Ergonomics. Smarter Value.
Experience high-end features without the high-end price tag. The SIHOO M18 delivers office-ready performance, comfort, and durability—making it the smart choice for professionals who expect more from their chair, not their budget.
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How to Use a SIHOO M18 Series Chair Properly
How do I adjust the SIHOO M18 for the best ergonomic support?
To get the most ergonomic benefit from your SIHOO M18:
- Adjust so your feet are flat on the floor and your knees are at a 90° angle.
- Align the built-in lumbar support with the curve of your lower back to reduce pressure.
- Position the 3D armrests so your elbows rest naturally at desk level, preventing shoulder strain.
What’s the best way to use the recline and tilt features?
The SIHOO M18 offers a smooth reclining mechanism with tilt tension control:
- Use the tilt lock to set your preferred recline angle (ideal for reading or relaxing).
- Adjust the tilt tension knob underneath the seat to control how easily the chair leans back—loosen for a relaxed recline, tighten for firm support.
- Reclining for a few minutes during breaks can help relieve pressure on your spine and keep you energised.
Can I sit for long hours in the M18?
Yes, the SIHOO M18 is built for extended use—but proper setup and posture are key:
- Sit with your back fully supported by the mesh backrest and lumbar support.
- Avoid slouching or leaning forward for long periods—rely on the chair’s ergonomic design to support your posture.
- Take short standing breaks every 60–90 minutes to improve circulation and reduce fatigue.
Customer Service
Email: support@sihoo.com.au
Phone: 1300 002 580
Operating Hours
Monday to Friday: 8am - 5:30pm (Melbourne/Sydney time)