DM9 High-Back Ergonomic Office Chair | Mesh | 150KG Rated | 10-Year Warranty

Most office chairs give up before you do. The DM9 doesn't.

Built for the long haul — whether that's a full workday, a late-night gaming session, or both — the DM9 is an ergonomic office chair that actually keeps up. The ridge-shaped bionic backrest follows the natural curve of your spine, while the height-adjustable lumbar support with U-shaped structure targets your lower back specifically. Not just lumbar in the rough direction — lumbar where you actually need it.

The mesh high back breathes, so you're not fighting your chair by mid-afternoon. The headrest adjusts in both height and angle. The backrest reclines from 90 to 120 degrees and locks at four positions, so whether you're in focus mode or need to decompress for five minutes, you're covered. Seat depth is also adjustable — because not everyone sits the same way.

Three-dimensional armrests, Class 4 gas lift, 360-degree nylon castors, and a 350mm non-slip five-star base. Everything you'd expect from a proper ergonomic chair, and a 10-year warranty to back it up.

150KG weight rated. BIFMA certified. One of the most well-specced chairs at this price point in Australia.

Features:

• Ridge-shaped bionic backrest — contoured mesh back follows your spine's natural curve to reduce back and shoulder strain
• Adjustable lumbar support — height-adjustable U-shaped lumbar targets your lower back precisely, not approximately
• 4-position recline lock — backrest tilts from 90° to 120° and locks in four positions for work or rest
• Height & angle adjustable headrest — supports your neck whether you're upright or leaning back
• 3D adjustable armrests — adjust up/down, forward/back, and rotation for perfect shoulder alignment
• Adjustable seat depth — 515mm seat depth adjustable to suit different body types and sitting styles
• Class 4 gas lift — 100mm of smooth seat height adjustment (455mm – 555mm range)
• 360° nylon castors — quiet, smooth movement on hard floors and carpet
• 150KG weight rating — one of the highest in this price range
• BIFMA certified — independently tested to industry standards for safety, durability, and performance
• 10-year warranty against manufacturing defects (parts replacement)
• Seat width: 500mm | Total width: 640mm | Depth: 640mm | Net weight: 17.45KG
• Minor assembly required