Xenium Classic

Designed by ergonomic seating guru, Michael Ballendat, Xenium Classic is an excellent fully adjustable office chair made from high quality materials and tested to German TUV standards. The single piece back rest is suitable for most individual sizes and the scope of adaptability in our Xenium chairs make perfect ergonomic sense for an ever changing office environment and workforce.


Xenium chairs are a firm favourite with our customers.

Xenium Classic

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

An independently height adjustable back rest means you are able to position the lumbar support in the small of your back. 

Multi-lock synchronous mechanism with weight tension adjustment.

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

550mm high back in a twin tone fabric / mesh finish.  Grey, black or choose a colour from our Runner 3D mesh fabric range.

Integrated lumbar contouring provides back support where it is needed most.

Available in a Grey, Black or White frame finish.


Black or White with polished aluminium features. 

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

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

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

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

integrated forward seat tilt of +4°


Design Assured

All of our seating is designed and built to the highest German DIN standards.  This means every component, nut, bolt and fixing is selected for its suitability of purpose.  Each new design is tested to destruction to ensure that our chairs are suitable to withstand today's demanding office environments.  They also follow and conform to German TÜV standards for ergonomic seating requirements.  Often going above and beyond the set guidelines.

GS mark TÜV 150 kg

GS mark TÜV 180 kg (Must be stipulated at point of order)

EN 1335 1 – 3

NPR 1813 (Applies to all chair versions with the uprated gas spring GL 40.55)

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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 decent 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 Classic 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:

580mm - 670mm

360mm - 510mm

User Weight:

User Height:

45kgs - 110kgs

5'4" - 6'5"

Xenium Classic 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. 

Xenium Classic 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 in grey, black or white with black tops.

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.

Depth Adjustable Lumbar Supports:

Xenium Classic comes with contoured cushioning in the back rest as standard.  However, for those that might want greater, adjustable support for the small of your back, there are three options available. 



Manually adjustable mechanical

lumbar support


Push button pneumatically adjustable

lumbar support


Hand pump pneumatically adjustable

lumbar support

Design Features: Make It Yours

Frame Finish:

Xenium's default colour finish for the frame is grey.  However, there is a black edition and a popular, growing 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.

Standard Finish:

Grey mesh 'Runner' fabric.

Grey frame

Grey armrests

(where applicable)

Black base

Black armrests

(where applicable)

Black Edition Finish:

Black frame

Black mesh 'Runner' fabric on the seat edges and back rest.

White Edition Finish:

White armrests.

Black tops.

Polished lower frame

White upper frame

White shell

Polished 5 star base

Go Colour:

You can get creative and choose the colour of your mesh panels, or runners as we call them.  Choose from any colour in the RUNNER 3D fabric range.


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. 

Fabric Price Group 20



100% Polyester



100% Polyurethane Vinyl



100% Polyester



100% Polyester



100% Re-Cycled Polyester



100% Polyester



100% Polyester



100% Re-Cycled Polyester

Fabric Price Group 40



100% Re-Cycled Polyester



100% Polyester FR



100% Urethane Medical Vinyl

Fabric Price Group 45



100% Trevira CS



100% Pigmented Split Leather



100% Urethane Vinyl



80% Polyester

20% Re-Cycled Polyester

Fabric Price Group 48



100% Virgin Wool



95% NZ Wool / 5% Polyamide



95% Virgin Wool / 5% Polyamide

Leather Price Group 50

Leather Price Group 55



Pigmented soft grain leather



100% Semi-Aniline Leather

Gallery Xenium Classic 
Xenium Classic
Xenium Classic chair with...

Neck rest
A64 Armrests
White Frame Edition
Xenium Classic
Xenium Classic chair with...

Neck rest
A64 Armrests
White Frame Edition
Xenium Classic
Xenium Classic chair with...

Neck rest
A64 Armrests
White Frame Edition
Xenium Classic
Xenium Classic chair with...

Neck rest
A64 Armrests
White Frame Edition
Xenium Classic
Xenium Classic chair with...

Neck rest
A64 Armrests
White Frame Edition
Xenium Classic
Xenium Classic chair with...

Neck rest
A64 Armrests
White Frame Edition
Xenium Classic
Xenium Classic chair with...

A64 Armrests
White Frame Edition
Xenium A64 3D Armrest
Xenium A60 2D Armrest
Show More
Alternative Xenium Chairs 
Xenium DuoBack chair
Xenium Net Back chair
Office Ergonomics Limited
4 Ministry Wharf
HP14 4HW
Tel: 01494 565995

© 2020 by Office Ergonomics Limited

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