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Xenium DuoBack

The home of the renowned and highly regarded  DuoBack® back rest.

The vertically split back rest reduces direct pressure on the spine by up to 50%. Your back is instead supported on your back muscles either side of the spine.

Each back pad is individually mounted on a flexible yet robust bracket.  These flex and move with you throughout your working day to ensure that your back is fully supported, regardless of how you sit.

Dynamic Seating At Its' Best

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Integrated independent seat tilt of +4°

Xenium DuoBack Office Chair

470mm high DuoBack split back rest in a twin tone fabric / mesh finish.

Independently mounted back rest pads provide continually adjusting back support which adapts  to changes in your posture.

Available in a Grey, Black or White frame. Or Grey/Black/White with polished aluminium features. 

Seat depth adjustment means you can optimise support based on your upper leg length. 

Integrated independent forward seat tilt of +4°

Multi-lock synchronous mechanism with weight tension adjustment.

Gas assisted seat height adjustment.  Tested and certified to TUV and German DIN standards

735mmØ 5-star base in black or polished aluminium.

65mmØ twin wheeled brake unloaded castors for soft floors OR soft wheeled castors for hard floor surfaces.

Xenium DuoBack®

Height adjustable neckrest.


Two tone fabric finish.  Your choice of upholstery is complimented with a 3D mesh fabric by Gabriel®

The standard colour is anthracite but you may select another from their Runner fabric range.

Choose no armrests, 2D height adjustable armrests or 3D height, width and depth adjustable arm rests.

Anatomically contoured seat cushion, 50mm thick, medium density foam.


At Home


Whilst it is true that all of our seating is primarily designed for use in a busy modern office, the current climate means many more of us are working from home.  To us, now has never been a better time to stress the importance of ergonomics, especially in the 'office at home'.  Many companies take workplace ergonomics very seriously as they look after their staffs' well being.  So the chances are you have a good quality office chair, at the office.

But what about at home?  We hope that you will consider how and what you sit on away from the office and that you don't just make do!

If you are looking to purchase a quality chair for home, look out for any of our fabric, vinyl or leather finishes marked with the following symbols...

These markings indicate that the finishes have been tested to meet European and British standards in regards to fire and flame resistance and we hope, offer extra peace of mind when used at home.

Xenium DuoBack measurements:

Seat Height:

Back Width:

420mm - 530mm


Seat Width:

Seat - Lumbar:


150mm - 250mm

Seat Depth:

Seat - Elbow:

390mm - 500mm

150mm - 250mm

Back Height:

Elbow - Elbow:

540mm - 630mm

360mm - 510mm

User Weight:

User Height:

45kgs - 110kgs

5'4" - 6'4"

Xenium DuoBack standard adjustments:

Seat height adjustment


Multi-lock synchronous mechanism with weight tension control


Independently height adjustable back rest


Sliding seat mechanism

Forward seat tilt of +4°

A clever design feature of all Xilium and Xenium operator chairs is that when the back rest is raised in height, it also travels backwards.  This means that if you are tall more of the seat is exposed for a longer upper leg.  Combined with the depth adjustment of the seat Xilium and Xenium chairs can easily and comfortably accommodate the taller user.  In contrast, by lowering the back rest and reducing the seat slide, it will also adjust to more petit individuals.  This is a perfect ergonomic workplace solution for multiple users of various sizes. 



Each DuoBack® pad is independently mounted on a firm yet flexible bracket.

They are designed to flex and move as you do, continually adjusting to changes in your posture...

... They will 'hug' your back when you are seated and 

each pad will adjust itself to the unique shape of

your back...

... The vertical gap between the DuoBack® pads reduces direct pressure on the spine by up to 50%.  Recommended worldwide by physiotherapists, medical professionals and work place assessors for the support and ergonomic excellence DuoBack® provides.

Dynamic Ergonomics

Xenium DuoBack options:


A60: 2D Armrests

Height adjustable arm rests.  Slight rotation of the front of the arm.

Finished in grey, black or...

... white with black tops.

A64: 3D Armrests

Height, width and depth adjustable arm rests.

Finished with black frames and grey or black tops...

... Polished aluminium frames and grey or black tops...


... or polished aluminium frames, white with black tops.

'3D' Armrests adjust in width

underneath the seat and also by rotating the offset PU top pads by 180° to bring them closer together.


Further width adjustment and fine tuning the support for your arms is achieved by rotating the arm top pads to the desired position. 

Neck Rest:

As an integral part of the aesthetic design of Xenium Classic, the headrest is finished in grey mesh to compliment the mesh upholstery on the back rest and seat edges.


The standard colour for the mesh upholstery is grey.  However, you may choose a different colour from our 'Runner' fabric range.  If you would prefer the neck rest upholstery to be the same as the main colour of the chair, you can have this too.


Chairs finished in leather, have the option of a leather neck rest.  


Additional Comfort:

Coccyx Relief Zone:

Hidden from view, our coccyx relief zone is a void at the rear of

the seat cushion which is designed to relieve pressure on the coccyx.

Memory Foam:

Pressure relieving memory foam for the seat.

Soft Castors:

Often overlooked but actually very important!

Soft wheeled castors for hard surfaces such as wooden or

tiled floors.

Frame Finishes

Xenium's default colour finish for the frame is grey.  However, there is a black edition and a popular demand for white, you can choose this too!  Certain components, such as arm rest tops will still remain black, so as to keep your chair looking clean and fresh.


Fabrics & Finishes

Colours have a great power. They influence our mood,can positively stimulate and be the perfect background for effective work and communication. The finishes we offer have been selected according to the current trends because finishes are not only about colours but also texture, shape and tone which when combined together create a full emotional experience


The finishing touch is the upholstery and we use some of the best, accredited mills, including Camira, Kvadrat, Fidivi & Gabriel®

Colours Are Emotional

Fabric Runners


Xenium DuoBack is upholstered with Gabriel's® 3D mesh fabric to panels on the lower back rest, seat edges and where provided, the neck rest.

The standard colour is anthracite RN60025.  However, you may select an alternative colour to customise your chair, providing a unique identity.

Main Upholstery

These are the predominant fabric or leather finishes for the seat and back rest.  Xenium DuoBack is available in the following finishes.  Click a swatch or fabric name to see the available colours within that range, the fabric durability and the fire retardant information.


We can upholster chairs in a corporate or customer fabric / leather.  Please contact us to discuss your requirements. 

Fabrics Price Group 20

Era is a subtle, two tone polyester fabric containing stretch in both directions for ease of upholstery. The baby herringbone weave offers an understated contemporary texture while its colouring technique provides close up intrigue. The palette incorporates playful brights and sophisticated muted tones.

Xtreme is a modern crepe weave fabric made from 100% post-consumer recycled polyester, diverting waste from landfill and saving virgin raw materials.

Fabrics Price Group 40

Felicity is a unicoloured, multifunctional fabric made from 100% recycled, post-consumer polyester.

Made from 100% REPREVE®, a brand of recycled polyester made from used plastic bottles, Rivet celebrates Camira’s 20 years’ experience in designing and manufacturing recycled fabrics.

PERMABLOK3® is an effective barrier against the virus as is certified with:

  • ISO 18184: reduction of Coronavirus presence by more than 90% within one hour of contact.

  • ISO 21702: reduction of Coronavirus activity by 99,9% within 24 hours of exposure on the surface.

Fabrics Price Group 45