Which SIDIZ Chair Is Right for You? A Guide by How You Work

Eight chairs is a lot.

Open a range page and everything starts to look like a nice chair. The shapes are similar, the colours blend together, and the prices don't always explain themselves. So we tend to pick on price or looks. That works nicely until the chair doesn't suit the desk, the room, or the hours we actually spend in it.

We're SIDIZ Australia, and we sell a premium ergonomic office chair range for adults, gamers and kids. This guide sorts the current lineup by how you actually work, so you can skip to the chair that fits your day. Every spec below comes from the live product pages, checked on 26 October 2026.

The Current Range at a Glance

Think of the table as a starting point, not a verdict. The sections below explain why each chair suits the use listed, where it falls short, and what the live page leaves unanswered. We'd rather tell you that than guess.

Sort by How You Work

You sit most of the day, at one desk

The T50 2nd Generation is built for this. The live page lists a lumbar pad with 50 mm of height and 10 mm of depth adjustment. It also lists a headrest 310 mm wide with 55 mm of height and 55 degrees of angle, plus five recline limits from 105 to 130 degrees. At $449 on pre-order, it sits mid-range on price and near the top on how much of the chair adjusts.

If your room runs warm, the T50 AIR 2nd Generation is the mesh version, at $489. The page lists the same style of adjustments, so the real difference is the seat and back material.

You want a wider adjustment range

The T60 page lists a headrest with up to 125 mm of height adjustment and 35 mm of depth. Lumbar support comes with seven height settings and three depth settings. That is more lumbar detail than the T50 2nd Generation states, which helps if you want to fine tune where the support sits. Price is $549 on pre-order.

You want the largest build in the range

The T90 is the heaviest chair here, at about 28.7 kg. Its armrests adjust through 70 mm of height, 60 mm of depth, 35 degrees laterally and 230 degrees of rotation. It comes in mesh, fabric or leather, including a made to order leather option with extra production time. The page lists $1,299 for the chair, with a second figure of $1,379 beside it that the page doesn't explain.

You are buying your first proper chair, or watching the budget

The T20 is made for exactly this. The page describes it as an entry level ergonomic chair for secondary students, home workers and office teams. It lists four recline stops up to about 125 degrees and a headrest that adjusts in height and angle. At a pre-order price from $279, it is the lowest in the adult range, and we think it is a lovely place to start.

Your desk is small, or you are a smaller person

The LINIE page says it suits people about 150 cm and taller. That is more specific than the rest of the adult range, where the pages give no minimum height at all. It weighs about 13.2 to 13.7 kg depending on the seat type, the lightest in the adult range, which is handy if the chair gets moved around. Price is $389.

You game, but also work from the same desk

The GX is built around that overlap. The page lists nine armrest height steps across 110 mm, seven angle positions, and a four stop recline of about 100 to 120 degrees. Its load rating is 115 kg, lower than the 125 kg on the adult office models, so it is worth a quick check if you are a larger user.

For a Child or Teenager

None of the adult chairs above are made for a growing body, and that is fine, because we have one that is. The RINGO gen2 page describes a four step growing system with a removable footrest, meant to carry a child through the primary school years. It has a 100 kg load rating and weighs about 11 kg. At $259 it is also the lowest priced chair in the lineup.

What the Range Doesn't Tell You

None of the pages we checked states a seat height or seat depth range as text. Only LINIE states a recommended user height. So fit for your own legs is something to check yourself, or ask our support team about. Load ratings also differ, from 100 kg for RINGO gen2 to 125 kg for most office models. Compare that number with your own weight instead of assuming the whole range is rated the same.

Fit Before Price

Pre-order prices on 26 October 2026 ran from $259 for RINGO gen2 to $1,299 for the T90. For most single desk buyers, the T20 at $279 and the T50 2nd Generation at $449 cover the ground nicely. The jump to the T90 is mostly a jump in build size and upholstery choice. It isn't a small step up in adjustment range, since the T60 already states more lumbar detail than the T50 2nd Generation for $750 less than the T90.

A Quick Decision Path

A Made Up Household

Picture a made up scenario. The Nguyen family has three desks in use most weeks. A parent works from a spare room most days, a teenager studies after school in their bedroom, and a younger child does homework at the kitchen bench. Three different chairs solve this better than one chair moved between rooms.

The parent, at a desk for most of the day, is a clear case for the T50 2nd Generation or its mesh twin. The teenager is tall enough for an adult chair but watching the budget, which suits the T20 well. The younger child, still growing, is who the RINGO gen2 was built for. One mid range adult chair shared between all three would have left at least one of them a little uncomfortable.

Easy Things to Overlook

Comparing by price alone

The lowest priced chair in the range, RINGO gen2 at $259, is made for a child with a 100 kg load rating. It isn't a budget pick for an adult desk. Compare chairs within the group they were built for, and the price gaps start to make sense.

Assuming every adult chair has the same load rating

Most of the adult office chairs state 125 kg, but the GX states 115 kg. If you are near either figure, check the exact model page and you'll be sorted.

Buying for the room you have today

A spare room that later becomes a shared office may need to suit two people. If that could happen, a chair with a wider adjustment range, such as the T60, gives you more room to grow into.

Skipping the pre-order wave and close date

Pages in this range have shown different waves on different dates this October. Before you order for a deadline like a birthday or the new school term, glance at the wave and close date on that chair's page. An earlier visit might show a date that has since moved.

Pre-Order Timing Across the Range

As at 26 October 2026, the pre-order collection page shows a banner reading Wave 2, open until 30 November 2026, with delivery estimated for mid-December 2026. The page lists 16 products and shows no individual wave number for each. Individual product pages carry their own status lines. The T60 page, for example, still showed Wave 1 with a 10 October close date that has already passed. The simplest habit is to read the page of the chair you want on the day you order.

Where the Prices Land in Practice

A quick way to see the range is by price band. Under $300 you'll find the T20 and RINGO gen2. Between $389 and $549 sit LINIE, the T50 chairs, the GX and the T60. The T90 stands on its own from $1,299. Most single desk buyers end up in the middle band, which is also where the adjustment detail on the pages gets richest.

Moving Between Chairs as Needs Change

A household that outgrows one chair doesn't have to start again. A teenager who moves out can take the T20 along. A child who outgrows RINGO gen2 can move up to an adult chair, and the growing chair can pass to a younger sibling. Planning one step ahead, rather than buying for today alone, can save a second purchase within a year or two.

Checking Fit Before You Commit

The surest check for any of these chairs is still sitting in one, in a showroom or at a friend's desk, for longer than a minute. A chair that reads well on a spec sheet can still feel wrong for a particular back or a particular desk height. Test it doing the kind of work you actually do, not just leaning back once to see how the recline feels.

Conclusion

Eight chairs sounds like plenty until you sort them by your own day. A single desk for long hours points to the T50 2nd Generation or its mesh twin. A small room or a smaller frame points to LINIE. A child growing through primary school is who RINGO gen2 is for, rather than a scaled down adult chair. None of this is really about price first. It is about which chair was built for the problem you actually have.

If you're still unsure after the table, try the oldest test there is. Sit in the chair for longer than a minute, doing the work you actually do. A showroom visit or a careful read of the return terms costs far less than a chair that sits unused after a fortnight, and we're always happy to help you work out the fit.

Sources Referenced

1. SIDIZ Australia product pages: T20, T50 2nd Generation, T50 AIR 2nd Generation, T60, T90, LINIE, GX and RINGO gen2, and the pre-order collection page (sidiz.au), as at 26 October 2026.