ONEX RTC Giant Alcantara Gaming Chair Review: Big Chair, Big Price, But Where’s the Alcantara?

I bought the ONEX RTC Giant Alcantara Gaming Chair with our own money. This is not sponsored, not gifted, not arranged through a brand, and not one of those suspiciously cheerful reviews where everything is apparently wonderful because a courier dropped off a free box.

I paid for it myself, sat in it myself, built it myself, and after living with it for a little while, I have thoughts.

And the short version is this: I do not hate this chair. In fact, there are parts of it I genuinely like. It is large, comfortable, supportive, easy enough to adjust, and at over 6ft, I fit in it very well. That alone puts it ahead of many gaming chairs, which often feel as though they were designed for a teenage esports prodigy with the shoulder width of a coat hanger.

But this chair also costs around $550, and at that price, I expect more than “yeah, it’s fine.”

I expect the details to feel sorted. I expect the materials to match the marketing. I expect the bolts to stay where I put them. And I expect customer support to exist somewhere outside the realm of myth and legend.

Unfortunately, the ONEX RTC Giant Alcantara Gaming Chair does not quite manage all of that.

What Is the ONEX RTC Giant Alcantara Gaming Chair?

The ONEX RTC Giant Alcantara is a large gaming chair aimed at people who want something roomier than the usual bucket-style chair. It has a high backrest, a wide seat, plenty of adjustability, built-in lumbar support, a magnetic head pillow, and a design that tries to walk the line between gaming chair and premium office setup.

On paper, it has plenty going for it:

• 125kg maximum weight rating
• Wide 55cm seat
• Tall 84.5cm backrest
• High-density moulded foam
• 4D adjustable armrests
• 90 to 135-degree backrest recline
• Built-in adjustable lumbar support
• Magnetic head cushion
• Aluminium base
• Class 4 gas lift
• 65mm nylon castors
• Knee-tilt mechanism
• Around 25.4kg chair weight

It is not a cheap little chair from the back aisle of an office supply store. This is meant to be a proper gaming chair with a more premium finish, especially because the word “Alcantara” is sitting right there in the name like it has arrived wearing an Italian suit.

That is where things start to get a bit complicated.

Price and Expectations

At around $550, this chair lands in a strange part of the market.

It is not in the silly-money designer office chair world, where everything has a mesh back and a price tag that looks like a used Mazda. But it is also not cheap. You are well past the budget gaming chair zone here.

For $550, I think it is reasonable to expect:

• Better material coverage
• Better long-term confidence
• Fewer rattles and squeaks
• A stronger sense of quality
• Better brand support
• A chair that feels more special than average

The ONEX RTC Giant does some things well, but it does not consistently feel like a $550 product. It feels like a decent gaming chair with some nice touches and a few decisions that make you wonder where the money went.

The problem is not that it is uncomfortable. It is not. The problem is that it gives you just enough to be likeable, then immediately reminds you that it could have been better.

Design and First Impressions

Visually, I mostly like it.

The chair has a large, planted look. It does not look fragile or flimsy, and the proportions suit a bigger frame. Some gaming chairs try so hard to look aggressive that they end up resembling a rejected prop from a budget sci-fi film. This one is a bit more controlled than that.

The colour options include:

• Black
• Black and Blue
• Sian Green

The general shape is good. The seat is broad, the backrest is tall, and the chair has enough presence to feel substantial without completely dominating the room.

The good bits:

• The overall shape is clean
• The wider seat is genuinely useful
• The magnetic head pillow looks and feels good
• The armrests are practical and adjustable
• The chair feels properly sized for taller users
• The castors roll nicely
• The aluminium base gives it a solid stance

But then there is the branding.

The Logo Problem

The large RTC logo on the back is not my favourite thing in the world.

The rest of the chair is reasonably clean, but the big colourful logo makes it feel more childish than it needs to. It is not enough to ruin the chair, but it does stop it from looking as premium as it probably wants to.

This is the annoying part, because underneath that logo there is a pretty tidy chair trying to get out.

The issue is:

• The chair could look more mature
• The large logo makes it feel cheaper
• The colours in the branding clash with the cleaner design
• It pushes the chair back toward “gaming room” rather than “nice desk setup”

A more subtle badge would have made a huge difference. Sometimes less really is more. And in this case, less logo would have meant more class.

The Alcantara Issue

This is my biggest frustration.

The chair is called the ONEX RTC Giant Alcantara, so naturally, you would expect a lot of Alcantara-style material. That is rather the point. The whole reason many people like suede-style or Alcantara-style finishes is because they feel nicer, breathe better, and avoid the dreaded peeling problem that often ruins cheaper pleather chairs over time.

But on this chair, there is not as much of that material as I expected.

The Alcantara-style material is mainly used on:

• The side sections
• The magnetic head pillow

The heavier-wear areas appear to use more pleather-style material, which is disappointing because those are the exact parts that will get used the most.

That matters because pleather has a habit of doing the same thing over time:

• It starts looking shiny
• It gets tired
• It can crack
• It can peel
• It can make an otherwise decent chair look terrible

And that is the entire reason I wanted something with an Alcantara-style finish in the first place.

To be clear, the chair does not feel awful. It does not feel like bargain-bin plastic. But when a chair uses “Alcantara” as one of its big selling points, I want more of the chair to actually feel like that. Not just some of it. Not just the decorative bits. The main contact areas should feel like the premium part of the product.

Instead, it feels like ONEX gave the chair just enough soft-touch material to earn the name, then went back to PVC where it really counts.

That is a shame.

Comfort and Fit

This is where the chair pulls itself back from the edge.

I am 6’1”, and I fit in the ONEX RTC Giant very well. That is not something I can say about every gaming chair. Plenty of them claim to be large, but once you sit down, your shoulders are jammed into the sides and your legs are hanging off the front like you are perched on a lunchbox.

This one actually feels properly sized.

The seat is wide enough, the backrest is tall enough, and the overall position feels natural. I did not feel cramped, pinched, or perched too high.

What works well:

• The seat base has good width
• The backrest suits taller users
• The chair feels stable underneath you
• The foam feels supportive rather than squishy
• The magnetic head pillow is genuinely good
• The built-in lumbar support is useful
• The overall seating position works well for my height

The foam is on the firmer side, which I do not mind. A chair that feels soft in the showroom can sometimes feel like a collapsed sponge after a few weeks. This feels more structured, which should help during longer sessions.

ONEX suggests this chair is suited for 5 to 8 hours of use, and that feels about right. I would not call it a luxury office chair, but for gaming, working, editing, or sitting at a desk for a decent chunk of the day, it is comfortable enough.

Adjustability

There is plenty to play with here.

The chair gives you the usual gaming chair adjustments, plus a few extra touches that make it easier to get comfortable.

You get:

• Height adjustment
• Reclining backrest
• Chair tilt
• Tilt tension control
• Lockable tilt range
• 4D adjustable armrests
• Adjustable lumbar support
• Magnetic head pillow

The backrest reclines from 90 degrees to 135 degrees, which gives you enough movement to sit upright for work or lean back when you want to pretend you are relaxing while actually watching YouTube videos about cars you cannot afford.

The chair tilt moves between 3 and 18 degrees, and the tension control lets you change how much resistance there is when leaning back.

The armrests are one of the better parts of the chair. They are adjustable in multiple directions, which makes a real difference if your desk height is not perfect.

The armrests can move:

• Up and down
• Forward and backward
• Side to side
• At an angle

They are not the most luxurious armrests ever made, but they are practical and useful. That matters more than fake softness.

The Magnetic Head Pillow

The head pillow deserves its own mention because it is one of the best parts of the chair.

A lot of gaming chair pillows are attached with straps that wrap around the backrest and make the whole thing look like camping equipment. This one uses magnets, and it is much cleaner.

The pillow:

• Looks better than a strapped cushion
• Stays in place well
• Feels soft and comfortable
• Is easy to move
• Adds to the premium feel of the chair

It is one of the few parts of the chair that actually feels like it belongs on something at this price. I like it.

Built-In Lumbar Support

The ONEX RTC Giant uses built-in adjustable lumbar support rather than a loose pillow. That is a good move.

Loose lumbar cushions on gaming chairs can be hit and miss. Sometimes they help. Sometimes they feel like someone has wedged a sofa cushion into your spine. Built-in support feels cleaner and is easier to live with.

The lumbar support here is not magical, but it does the job.

It gives you:

• Better lower-back support than a flat chair
• A cleaner look than a separate cushion
• Less clutter on the seat
• More useful adjustment

For longer sitting sessions, it helps. I would not say it transforms the chair into some medical-grade ergonomic masterpiece, but it is better than the usual cheap cushion setup.

Assembly

Putting the chair together was mostly straightforward.

The chair weighs about 25.4kg, and the box is around 30kg, so it is not exactly a feather. You will want some space around you before you start building it, unless you enjoy fighting cardboard and chair parts in the middle of the room like a man assembling furniture during a power cut.

The official assembly time is around 40 minutes, and that feels realistic.

The good parts:

• The process is fairly simple
• The main components feel solid
• The instructions are easy enough to follow
• The arms are already attached
• The parts are not overly complicated

The annoying parts:

• Some pieces did not line up perfectly
• A few parts needed extra effort to fit properly
• Side panels have to come off if you need to access certain bolts
• Labels are poorly done
• Some bolts have needed tightening again after use

That last point is the one that really irritates me.

A chair should not feel like an ongoing maintenance hobby. I do not want to spend my life re-tightening bolts like I am preparing a race car. I want to sit down and use the thing.

Having to keep checking bolts after only a short amount of ownership does not inspire confidence.

Then there are the side panels, which should have been a simple snap-on-and-move-on part of the assembly. In reality, they were the most annoying bit of the whole build. They need a surprising amount of force to get into place, and while you are pushing them on, there is always that lovely little fear that one of them is going to crack before it actually clips in. Nothing else about the assembly was especially difficult, but these panels were an unnecessary pain.

Build Quality

The ONEX RTC Giant feels solid in some ways and less convincing in others.

The frame feels sturdy. The base feels strong. The chair has a good weight to it, and when you first sit down, it does not feel fragile. The castors roll well, the gas lift works smoothly, and the chair has a proper sense of size.

But after using it, the little things start appearing.

The main issues I noticed:

• Some bolts need re-tightening
• The chair squeaks more than expected
• Certain assembly points could fit better
• The material choice raises long-term concerns
• The branding makes it feel less premium

The squeaking is especially annoying. My old chair was used for over 6 years and made less noise than this. That is not ideal.

Now, does that mean the ONEX is falling apart? No. But it does make the chair feel less polished than it should.

At $550, squeaks and loose bolts are not charming quirks. They are the sort of thing that makes you stare at the chair and say, “Really?”

Everyday Use

Once assembled and adjusted, the chair is pleasant enough to use.

It is roomy, supportive, and comfortable for long sessions. I like how easy it is to sit naturally in it, especially as someone taller. It does not feel like I am folding myself into a racing seat made for a PlayStation lobby.

The best everyday qualities are:

• Good size for taller people
• Comfortable seat width
• Supportive backrest
• Useful lumbar adjustment
• Nice head pillow
• Good armrest range
• Smooth rolling wheels
• Stable base

For gaming, it works well. For working at a desk, it is also fine. For general use, it is much better than a cheap gaming chair.

But it never quite disappears underneath you the way a great chair should. You notice the squeaks. You notice the material choices. You notice the logo. You notice the need to check bolts.

That is the problem. The chair gets the big things mostly right, then trips over a few details.

Customer Support

This part did not impress me.

I reached out to ONEX twice with a few questions that would have helped with this review. I did not receive a response.

That is disappointing.

A chair at this price should come with proper support from the brand. I was not asking them to deliver a new chair by helicopter. I just wanted a few basic questions answered.

Instead, nothing.

Customer support matters because chairs are not simple throwaway accessories. They have moving parts, materials that age, mechanical components, and warranty considerations. If something goes wrong, you want to know that someone at the other end is paying attention.

In my experience here, that did not happen.

That leaves a bad taste, especially when the product itself already has a few question marks around build and materials.

Warranty and Return Policy

The chair comes with a 1-year warranty.

ONEX also lists a 30-day return policy from the date you receive the item, but there is an important catch: the product must be unused, in its original packaging, with tags, and proof of purchase.

That means it is not really a “try it properly and return it if you do not like it” situation. Once you build it and use it, returning it may not be simple.

That is worth knowing before buying.

Key points:

• Warranty: 1 year
• Return window: 30 days
• Must be unused
• Must be in original packaging
• Must include tags and proof of purchase

So before you rip open the box like a raccoon in a bin, make sure you are fairly committed.

Specs at a Glance

Here are the key specs in a simpler format:

• Model: ONEX RTC Giant Alcantara
• Product codes: ONEX-RTC-G-AP-B, ONEX-RTC-G-AP-SG, ONEX-RTC-G-AP-BB
• Colours: Black, Black/Blue, Sian Green
• Maximum user weight: 125kg
• Suggested daily use: 5 to 8 hours
• Warranty: 1 year
• Overall size: 72cm wide, 61cm deep, 131cm to 137cm high
• Foam: High-density moulded foam
• Mechanism: Knee tilt
• Seat depth adjustment: No
• Tilt tension: Yes
• Armrests: 4D adjustable
• Backrest recline: 90 to 135 degrees
• Chair tilt: 3 to 18 degrees
• Lumbar support: Built-in and adjustable
• Head support: Magnetic cushion
• Gas lift: Class 4, up to 60mm adjustment
• Base: 350mm aluminium
• Wheels: 65mm nylon castors
• Backrest size: 57cm wide, 84.5cm high
• Seat size: 55cm wide, 55cm deep
• Seat thickness: 15cm
• Chair weight: 25.4kg
• Box size: 88cm x 72cm x 36cm
• Box weight: 30kg
• Assembly estimate: Around 40 minutes

What I Like

There are genuinely good things about this chair.

The strongest points are:

• It is very roomy
• It suits taller users well
• The seat is wide and supportive
• The backrest has good height
• The magnetic head pillow is excellent
• The built-in lumbar support is better than a loose cushion
• The armrests are highly adjustable
• The wheels roll smoothly
• The aluminium base feels solid
• It is comfortable enough for long desk sessions

For me at 6’1”, the size is one of the biggest wins. It feels like a proper large chair, not a normal chair with “Giant” slapped on the box because someone in marketing got excited.

What I Do Not Like

The frustrating parts are not small enough to ignore.

The main problems are:

• There is not enough Alcantara-style material
• The high-wear areas use pleather-style material
• Long-term peeling is a real concern
• The large RTC logo looks tacky
• The chair squeaks more than it should
• Some bolts have needed tightening again
• Assembly was not perfect
• Customer support did not respond to my questions
• The $550 price makes the flaws harder to forgive

The material choice is the big one. If you are buying this because you want to avoid the usual pleather gaming chair problem, be aware that this chair still uses PVC-style material in important places.

That is not what I wanted to see.

Is It Worth $550?

This is where I struggle.

If this chair were cheaper, I would be much more forgiving. At a lower price, I would say it is a big, comfortable gaming chair with a few annoying flaws.

But at $550, I expect it to feel more complete.

At this price, the chair should not make me think:

• Why is there not more Alcantara-style material?
• Why is it already squeaking?
• Why am I tightening bolts again?
• Why is the logo so loud?
• Why has customer support not replied?

That is too many questions for a product that is meant to feel premium.

Should You Buy the ONEX RTC Giant Alcantara Gaming Chair?

You should consider it if:

• You want a larger gaming chair
• You are tall and need more space
• You like firmer support
• You want good armrest adjustment
• You like the magnetic head pillow idea
• You find it on sale
• You are not too worried about the PVC material

You should probably think twice if:

• You want a chair with lots of real Alcantara-style coverage
• You hate squeaks and rattles
• You want a subtle-looking chair
• You expect strong customer support
• You are worried about pleather peeling over time
• You want a chair that feels truly premium for the money

For me, it is not a bad chair. It is comfortable, roomy, and mostly enjoyable to use. But it is also not the slam-dunk premium product I hoped it would be.

Verdict

The ONEX RTC Giant Alcantara Gaming Chair is a good chair with a frustrating identity crisis.

It wants to be premium, and in some ways, it gets close. The size is excellent, the comfort is good, the magnetic head pillow is a great touch, and the adjustability is strong. If you are taller or just want more space than a standard gaming chair gives you, there is a lot to like here.

But then the flaws start pulling it back down.

There is not enough Alcantara-style material. The pleather-style sections are exactly where I worry about long-term wear. The logo makes the chair look cheaper than it should. The squeaking is annoying. The bolts needing attention after a short time is irritating. And the lack of response from ONEX customer support does not help.

So, would I call it terrible? No.

Would I call it brilliant? Also no.

It is comfortable. It is big. It works well for my height. I do not regret buying it entirely. But for around $550, I expected a chair that felt more polished, more premium, and more confident in what it was trying to be.

Instead, the ONEX RTC Giant Alcantara is a chair I like sitting in, but not one I can recommend without a few big warnings.

If you can get it discounted, it becomes much more appealing. At full price, I would want ONEX to give me more Alcantara-style material, better finishing, quieter hardware, and customer support that does not vanish into the fog like an old Jaguar with electrical problems.