Onyx Bespoke Colour Seat Ergonomic Chair With Arms & Headrest




The Onyx chair is a fresh, contemporary office chair that offers a range of inspired features such as a multi-functional asynchronous mechanism with multiple adjustments and a contoured foam seat and back for extra support and comfort. The Onyx is a top choice for a posture task chair. Available in black or blue fabric and Soft Bonded Leather upholstery options. Optional headrest variant available.

- +
Price match guarantee


• Contoured foam seat and backrest for maximum user comfort • Triple lever multi-function mechanism • Ratchet height adjustable backrest • Pump up lumbar support • Seat slide • Height adjustable arms • Brushed aluminium 5 star base • UK crib 5 foam and fabric • Gas lift tested up to: 150 kg • Usage: 24 hours

Additional information

Seat colour

Bergamot Cherry, Ginseng Chilli, Maringa Teal, Myrrh Green, Senna Yellow, Stevia Blue, Tabasco Red, Tansy Purple

Flat Packed or Pre-Assembled

Flat Packed

Max Weight Capacity (KG)


Mechanical Guarantee (Years)


Fabric & Foam Guarantee (Years)


Arm Width (MM)


Arm Height (MM)


Product Weight (KG)



Now providing you with 8 different adjustments each with its own functionality, the Onyx is completely adjustable to suit your needs and comfort. The Onyx promotes correct alignment of the spine, practicing good posture, and reducing pressure on bones and joints. With a range of adjustability, you can adjust your chair in many different ways to make it suit YOUR needs.


Whilst at work, your neck works tremendously hard to keep your head up and supported. Our Onyx now provides you with a supportive headrest that is designed to fully support your head and neck whilst you’re at work. Your neck is only made up of 8 bones and 26 muscles and so it is crucial to allow your neck to relax whilst it’s working hard to hold the heaviest part of the body, your head.


Typing and writing at your desk for long periods of time can be very tiring and uncomfortable for the upper extremities of your body. If not supported or treated, it may cause health problems such as repetitive strain injury. We have designed the Onyx with armrests to allow for relaxation of the hands, arms, elbows, and shoulders and to prevent complications like repetitive strain injury from occurring.

Work better. Live healthier.

Chiro Endorsed

Operating outside of the UK mainland? Please get in touch here.


10% OFF

Be the first to know about our exclusive items, New catalogs and special promotions.