Pay in four with Afterpay or Zip at checkout.
This option is currently unavailable to order. Dispatch timing does not apply to this selection.
Choose an available option:
This option is currently unavailable to order. Dispatch timing does not apply to this selection.
All T90 configurations in this release are pre-order items. Use the estimated dispatch shown beside the purchase button. Natural Leather Limited Palette finishes are made to order; if a selected finish needs additional production time, SIDIZ Australia will confirm this before payment. Lifestyle images are styled and may show specifications that differ from the selected chair, so check your selected options carefully.
Shadow Grey
Tan Brown
Cream Beige
Green Black
Grey
Black
Dry Rose
Daisy Yellow
Greyish Mint
Teal Blue
Deep Navy
SIDIZ T90 Ergonomic Office Chair
The SIDIZ T90 is an ergonomic office chair designed for long hours of computer work.
To support the changes in posture and movement that happen naturally through a working day,
it applies Panorama 4D armrests, Perfect Fitting Lumbar Support and a flexible backrest.
That structure delivers stable seating across office work, working from home and multi-device setups,
making it a chair suited to work that demands sustained concentration.
SIDIZ's own patented mechanism supports the curve of your lower back in any posture, adapting to your body.
Built to keep your lower back comfortable through long working sessions.
Korean Patent No. 10-2468097
A flexible backrest structure that responds naturally as you move.
It reduces the load on your back and lower back over long periods of sitting, for comfortable support throughout the day.
Soft memory foam combined with 100% MDI foam for a comfortable cushioned feel.
It supports your shoulders and upper body so leaning in any direction still feels stable.
Modern work moves between PC, laptop, tablet and phone, which makes the movement of your arms and upper body matter more than it used to.
The T90's 4D armrests offer a wide adjustment range, supporting your arms and shoulders in whatever posture the task calls for. The movement opens out like a panorama.
*Korean Patent No. 10-2779705
A four-way adjustment system covering armrest height, depth, width and angle.
Adjustable through 70 mm height, 60 mm depth, 35° laterally and 230° rotation.
Calibrated tension gives steady support when you rest your arms.
It reduces fatigue in the arms and shoulders during keyboard and mouse work.
Soft silicone reduces pressure where your arms make contact.
It stays comfortable to the touch through long sessions.
More than 138 precisely assembled components produce a tilt mechanism that moves close to the way the body does.
Korean Patent No. 10-1533650 · Co-developed over six years with ITO Design.
The seat tilts along with the backrest as you recline, accounting for the way your legs naturally extend.
Set the range through which the backrest reclines, to taste. The resistance as it returns is adjustable too.
The cushioning is engineered so the frame never presses directly against you.
Height and angle adjust to suit different bodies and postures, supporting your neck and head steadily.
*Height 70 mm adjustment / 65° angle rotation
*Korean Patent No. 10-2779707
Resilient 100% MDI foam with a scooping technique applied distributes body weight evenly.
The waterfall seat edge falls away gently to reduce pressure on the thighs, staying comfortable through long periods of sitting.
*Scooping applies to Double Raschel and Aquatex
*Korean Patent No. 10-2779714
The more you focus on a task, the more your upper body leans forward naturally.
Forward tilting angles the seat slightly forward so you can hold a stable, comfortable posture without leaning back.
A two-layer mesh structure forms an air pocket, improving both breathability and durability.
A stain-resistant, water-repellent finish keeps it resistant to marks.
A five-piece collection of top-grade natural leathers carrying the heritage of Mastrotto Group and Montebello, Italian leather houses with 50 years of tradition.
*Made to order — please allow approximately three weeks including production
Premium Aquatex fabric that is both easy to care for and durable.
Resistant to water, staining and scratching, it stays easy to maintain even in a home with pets.
A premium full-grain leather finish with natural texture intact, adding a refined quality to offices and home offices alike.
Seat height / seat depth
Seat tilt
Headrest height / angle
Tilt range / resistance
Armrest height / depth / angle / tilt
Lumbar support height
SIDIZ Australia provides a five-year limited warranty unless a different period is stated for the product or component.
Warranty coverage is additional to your rights under the Australian Consumer Law. See the full terms for exclusions and the claim process.
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
This warranty is in addition to, and does not limit, exclude or modify, the rights and remedies available to you under the Australian Consumer Law.
The SIDIZ T90 is an ergonomic office chair designed around long hours of computer work. It is built to respond flexibly to changes in posture and movement — particularly in modern multi-device setups — so it works equally well for working from home, the office, or specialist work environments.
The T90 is a premium office chair built on performance engineering. Its flexible backrest, Perfect Fitting Lumbar Support and 4D armrests respond to your body and your working posture, and the design is recognised by seven registered industrial property rights.
The T90 is an ergonomic chair designed to stay comfortable through long working days. Lumbar support holds your lower back steady and the backrest moves naturally with you, helping you hold a good posture and reducing the fatigue that builds up over a day.
The T90 suits people who spend most of the day at a desk — developers, designers, planners and remote workers who are at a computer for long stretches.
Yes. The T90 suits home offices well. Beyond the design, it is built around a range of working postures, so you get office-grade comfort and concentration at home. It also won a prize in the office chair category at the iF Design Award 2025 in Germany.
Yes. Seat height and depth, backrest, headrest, lumbar support and armrests can all be adjusted to build a seating setup optimised for you.
The T90 suits setups using multiple monitors, laptops and tablets. It provides stable support and flexible movement even where posture changes frequently.
Yes. The T90 is a premium office chair designed for professional work environments and suits business and office use. Its durability and wide adjustment range make it practical where people of different builds share the same chairs.
Not sure yet?
Showroom visits are available by appointment. Contact us before travelling so we can confirm the model and configuration you want to try.
11 Ferndell Street, South Granville NSW 2142.
Product, delivery, service and returns
support@sidiz.au
Monday to Friday, 9:00 am to 5:00 pm AEST
Closed weekends and public holidays
For warranty and faulty returns, review the published warranty terms before contacting support.
