Herman Miller Cosm Carbon High Back Office Chair – Fast Delivery
The Herman Miller Cosm High Back Chair in Carbon is designed to deliver instant comfort with minimal effort. Its intelligent ergonomic system automatically adapts to your posture and movement, creating a balanced, almost weightless sitting experience throughout the working day.
The high back version provides enhanced upper back and shoulder support, making it particularly well suited to longer desk sessions and executive workspaces. Finished entirely in Carbon, this model has a clean, contemporary aesthetic that works equally well in modern home offices and commercial settings.
Available from UK stock for fast, free delivery.
Please note: the Cosm chair’s gas lift is intentionally engineered to provide a softer, more flexible feel — similar to suspension in a car — and may produce a light sound during movement. This is normal.
Key Features
• High back design for additional upper body support
• Auto-Harmonic™ tilt automatically responds to your weight and posture
• Breathable Intercept Suspension for flexible, temperature-neutral comfort
• Carbon frame and mesh finish
• Height-adjustable arms
• Adjustable seat height
• Choice of castors for carpet or hard flooring
• Delivered by Wellworking fully assembled and ready to use
• Backed by Herman Miller’s 12-year, 3-shift warranty
Wellworking Says…
“The Carbon high-back Cosm chair offers a distinctive design with adaptive support, adjusting automatically as you recline. Ideal for executive and home offices alike — and available now with fast, free delivery.”
Herman Miller Cosm High Back Office Chair FAQs
What makes the Cosm different from other ergonomic office chairs?
Cosm is designed to provide immediate comfort without complicated adjustments. Its Auto-Harmonic™ tilt mechanism automatically balances support as you recline, removing the need to manually adjust tension.
What is Auto-Harmonic™ tilt?
Auto-Harmonic™ tilt is a self-adjusting recline system that responds to your body weight and posture. It ensures smooth movement and consistent support as you lean back.
What is Intercept Suspension?
Intercept Suspension is a breathable elastomer mesh that flexes to support your spine while remaining comfortable and temperature neutral during long periods of sitting.
Is this Carbon version available for fast delivery?
Yes. This Carbon High Back model is available from UK stock for fast, free delivery.
Does the chair require assembly?
No. The chair is delivered by Wellworking fully assembled and ready to use.
Why does the gas lift sometimes make a sound?
The softer gas lift design allows greater flexibility and movement. A light sound during motion is normal and part of the chair’s responsive design.
What castor options are available?
You can select castors suitable for carpeted floors or multi-surface castors for hard flooring.
What is the weight capacity?
The Cosm High Back chair supports users up to 159 kg (350 lbs).
What warranty is included?
The chair is covered by Herman Miller’s 12-year, 3-shift manufacturer warranty.
WARRANTY CLAIMS
All warranties are automatically applied by Wellworking and there is no need to register your product with the manufacturer.
Please keep your proof of purchase safe (it's easier for us to locate your order with the invoice or web order number) and, in the unlikely event a fault occurs, contact us by emailing service@wellworking.co.uk and we will arrange a service visit or replacement.
As a certified B Corp we are committed to putting sustainability at the core of all the products and services we offer.
Our products are designed with quality and longevity in mind and this is reflected in their long warranties.
We are working with our suppliers to reduce packaging and limit the use of non-recyclable packing materials. We take away all the packaging when we deliver products and recycle as much as we can within our offices to reduce the waste that goes to landfill.
