Front view of black Sihoo M90 ergonomic chair in Australia with black frame and seat, mesh back, and adjustable headrest
Black Sihoo Vito M90 ergonomic chair in Australia from semi front left view on white background, showcasing ergonomic comfort and posture support
Black Sihoo Vito M90 ergonomic chair in Australia from semi front right view on white background, showcasing ergonomic comfort and posture support
Right angle of black Sihoo Vito M90 ergonomic chair in Australia on a white background, showcasing adjustable features and ergonomic design
Left view of black Sihoo Vito M90 ergonomic chair in Australia on a white background, highlighting adjustable armrests and lumbar support
Semi back left view of black Sihoo Vito M90 ergonomic chair in Australia on a white background, highlighting adjustable lumbar support and ergonomic design
Semi back right angle of black Sihoo Vito M90 ergonomic chair in Australia on a white background, emphasizing adjustable features and lumbar support
Back view of black Sihoo Vito M90 ergonomic chair in Australia on a white background, highlighting adjustable lumbar support and breathable mesh
White Sihoo Vito M90 ergonomic chair in Australia shown from front view on white background, emphasizing ergonomic comfort and posture support
Left angle of white Sihoo Vito M90 ergonomic chair in Australia on a white background, showcasing adjustable features and ergonomic design
White Sihoo Vito M90 ergonomic chair in Australia from semi front left view on white background, showcasing ergonomic comfort and posture support
Semi front right angle of white Sihoo Vito M90 ergonomic chair in Australia on a white background, emphasizing adjustable features and ergonomic design
White Sihoo Vito M90 ergonomic chair in Australia shown from right view on white background, emphasizing ergonomic comfort and posture support
White Sihoo Vito M90 ergonomic chair in Australia from semi back left view on white background, showcasing ergonomic comfort and posture support
Semi back right view of white Sihoo Vito M90 ergonomic chair in Australia on a white background, highlighting adjustable lumbar support and ergonomic design
Back view of white Sihoo Vito M90 ergonomic chair in Australia on a white background, highlighting adjustable lumbar support and breathable mesh
Black Sihoo Vito M90 ergonomic chair in Australia shown with two size dimensions, highlighting height and width measurements
Front view of black SihooVito M90 ergonomic chair in Australia with on a white background, highlighting adjustable armrests and lumbar support
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SIHOO Vito M90 Ergonomic Office Chair

$339.00 $529.00
Save $190.00 LOW ON STOCK
Free shipping with delivery in 1-5 days
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3-Year Warranty
30-Day Returns
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Why Choose Sihoo Vito M90?

The Sihoo Vito M90 is a budget-friendly ergonomic office chair for buyers who want breathable comfort and lower-back support that responds to their sitting position. Its split backrest and adaptive lumbar system provide separate support for your back and lumbar area, making it a practical upgrade for work, study, and gaming.

With an adjustable headrest, height-adjustable backrest, and 3D armrests, you can tailor the chair to your desk setup and comfort preferences. 

  • Move with support: Adaptive lumbar system responds to your posture
  • Stay cool: Breathable mesh encourages airflow
  • Find your fit: Adjustable backrest height and headrest
  • Support your arms: 3D armrests move with the reclining backrest
  • Take a break: Recline with adjustable tension
  • Added reassurance: 3-year warranty. 

Perfect for:

  • Home offices and hybrid work setups
  • Work, study, and gaming at the same desk
  • Buyers who prefer breathable mesh seating
  • Anyone seeking adaptive support without a premium price tag
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FAQs

The M90 is a full-height chair with a headrest, sized for users 165–188 cm tall. The seat adjusts from 46 to 55 cm high, is 51 cm wide and 46 cm deep, and the chair stands 107–130 cm tall overall. If you prefer a padded seat to mesh, choose the M90D option, which has a soft sponge cushion.
The M90 is rated to a maximum user weight of 150 kg. The gas lift and mechanism are BIFMA and SGS certified, and the aluminium alloy base has passed a 1,136 kg static pressure test.
The backrest is split into two sections. The lower lumbar section is mounted on a nylon and fibre spring that adjusts its support to your weight and the angle you are sitting at, so it keeps pressing gently into your lower back whether you lean forward, sit upright or recline. You can also raise or lower the whole backrest by 6 cm, across three gears, to match the lumbar section to your height.
Seat height (46–55 cm), backrest height (6 cm, three gears), backrest recline (locks at 103°, 113° or 123°) and recline tension, headrest height and angle on two joints, the 3D armrests (linked to the backrest so they move with you when you recline), and 360° swivel.
Assembly follows eight illustrated steps and usually takes one person about 20 minutes. The hardware and the Allen key you need are in the box, and there is an assembly video on this page.
The M90 is covered by a 3-year warranty. If a part fails under normal use, contact us with your order number and a photo and we will send a replacement part free of charge.
Orders are dispatched the next business day from our Sydney, Melbourne, Brisbane or Perth warehouse and usually arrive within 1–3 business days. Delivery is free Australia-wide.
The M90 with footrest is the same chair with a padded leg rest that slides out from under the seat for reclined breaks. The M76 is a much lighter (9.6 kg) compact mid-back chair with flip-up armrests, a 5 cm sponge seat and no headrest, sized for users 150–175 cm; the M90 is the pick if you sit for full days and want a headrest and adaptive lumbar support.