- Supernormal ergonomic preset for immediate comfort
- Four recline stops from 105 to 125 degrees
- Cloud Foam seat and ergonomic headrest
- Serviceable parts and five-year manufacturer warranty
- Designed for home offices, study and workplace settings
SIDIZ T20 Ergonomic Office Chair
Pre-order
T20
The Supernormal chair
T21HF2VG-5G1WW
360 VIEW
360 VIEW
T20
The Supernormal chair
T21HF2VG-5G1WW
15%
$279.00
$329.00
Price includes GST. Shipping calculated at checkout.
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Pre-order delivery
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Estimated dispatch
Sequential dispatch from early November 2026
Pre-order delivery
Your product page and cart show the current estimated dispatch timing for this pre-order allocation. Delivery begins after dispatch and varies by destination.
Assembly and setup
Please confirm with SIDIZ Australia whether assembly is included for your delivery before ordering. Follow the supplied assembly guide before using the chair.
View assembly guide (PDF)
Carton size (W x D x H)
780 x 690 x 290 mm
Made in
Vietnam
Five-year limited warranty
SIDIZ Australia provides a five-year limited warranty unless a different period is stated for the product or component.
Before you buy
Lifestyle images are styled and may show specifications that differ from the selected chair. Check the gallery image and selected options before ordering. Recline resistance can feel different depending on the sitter's build; try T20 at an Australian stockist where practical.
BASIC INFO
Product name
SIDIZ T20 Ergonomic Office Chair
Model
T21HF2VG
Included
Chair
Main materials
Mesh, fabric, moulded foam, plastic and steel
Frame and colour
White / Off White
White / Mid Grey
Charcoal / Smoke Black
Maximum load
125 kg
Warranty
5 years with product registration
SIDIZ T20 ergonomic office chair
What makes T20 different?
A minimal silhouette fits naturally into different rooms, while a carefully set ergonomic baseline keeps the controls simple. T20 is an approachable first ergonomic chair for secondary students, home workers and office teams.
A practical work chair with the functions that matter
THE SUPERNORMAL CHAIR
Comfort without complicated controls
T20 keeps adjustment straightforward while supporting the changes between concentration and rest.
The essentials of a chair that fits
Set the chair to your body
Adjust chair height and headrest height to establish a balanced working posture.
Simple tilt-resistance control
Choose from four resistance levels to suit body weight and preferred movement.
Four recline stops from focus to rest
Hold the backrest at 105, 113, 121 or 125 degrees for focused work or a comfortable break.
Comfort designed into every point of contact
SUPERNORMAL COMFORT
An ergonomic preset refined by specialists
The headrest, seat and armrest pads are proportioned to feel comfortable without a long setup process.
A headrest that feels comfortable across positions
The ergonomic shape supports the back of the head and neck as posture changes.
Cloud Foam comfort
SIDIZ scooping technology increases compression strength while softening the front edge where it meets the back of the legs.
Steady armrest pads
A generous pad area and firm material give the forearms a stable place to settle.
A work chair for home and business environments
FROM HOME TO OFFICE
The standard for comfort stays the same in every space
Serviceable parts and a five-year manufacturer warranty make T20 easier to keep working after purchase.
Nine to six comfort
Quiet, smooth castors and ergonomic support help concentration continue through the working day.
Designed for operation and maintenance
Separately serviceable parts and a five-year manufacturer warranty simplify long-term care.
Support for larger workplace orders
Contact SIDIZ Australia for project pricing, delivery planning and assembly options.
Business customer enquiries
T20 first and second generation comparison
FIRST AND SECOND GENERATION
From a straight silhouette to a softer minimal form
The first generation used clean lines and a sharp profile. The second generation carries a restrained rounded language through every part.
LIGHT SYNC TILT
Easier tilt-resistance adjustment
The second-generation lever is easier to reach without bending forward and keeps the mechanism visually clean.
HEADREST
Improved comfort and usability
The renewed headrest is comfortable across contact points and can be adjusted from the seated position.
SEAT
More room to sit comfortably
The second-generation seat is wider, softer and designed for separate service when compatible AU parts are available.
T20, made for your everyday
From focused work to a moment to yourself. Meet the everyday details of T20.
Read the film transcript
Meet the SIDIZ T20.
A cushioned seat.
An adjustable headrest.
Recline your way.
Work, study, or a little time to make something your own.
Make room for your everyday.
Explore T20, and pre-order at SIDIZ Australia.
Set it to your body
Chair height
Reduce load on the head and neck
Headrest height and angle
Choose how the backrest moves
Tilt resistance and recline stops
Five-year limited warranty
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.
T20 dimensions
- Maximum load
- 125 kg
- Product weight
- Approximately 15.5 kg
- Recline positions
- Approximately 105, 113, 121 and 125 degrees
- Maximum recline angle
- Approximately 125 degrees
- Measurement tolerance
- Approximately +/-20 mm and +/-1 kg
*Measurements may vary by plus or minus 20 mm and 1 kg depending on the method and location; this is not a product fault.
*Dimensions are measured with nobody seated.
*Seat height is measured at the centre of the seat.
*Dimensions are measured with nobody seated.
*Seat height is measured at the centre of the seat.
Using your chair safely
Removing marks from the frame
A melamine foam cleaning block can help remove marks from the chair frame. Rub gently, as excessive pressure may damage the surface.
Reclining safely
Do not throw your body weight suddenly against the backrest. Excessive force while reclining can create a tipping risk.
FAQ
Can the T20 headrest or seat be purchased separately?
The headrest and seat are designed to be serviced separately. Contact SIDIZ Australia to confirm compatible replacement-part availability.
How far does the T20 backrest recline, and can it be locked?
The backrest reclines to approximately 125 degrees. Four stop positions at about 105, 113, 121 and 125 degrees support focused work and rest.
Why can I not change tilt resistance while the backrest is reclined?
The resistance control is locked while the backrest is held in a reclined position. Return the backrest to upright and remove pressure from it before changing resistance.
Sit in one before you decide
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.
Contact centre
SIDIZ Australia support
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.