15% OFF

Made to order

The Herman Miller Cosm Chairs ergonomic design instantly responds to you providing the balance and support you need and a feeling of weightlessness that might make you forget you’re sitting in a chair at all.

Cosm instantly responds to your body movement and posture delivering a completely new comfort levels.


£1,165.35 inc. VAT

Available 4th June 2024

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Product Details

High Back

Leaf Arms

Graphite Seat and Back Mesh

Graphite Frame and Base

Auto Harmonic Tilt

Warranty 12 years

Cosm Description

Herman Miller Cosm chairs Auto-Harmonic Tilt puts the person first and responds to them – no matter their posture – providing a balanced recline and personalised comfort.

Studio 7.5 and Herman Miller perfected the self-adjusting tilt by inventing and engineering a complex finely tuned mechanism.

Accounting for the sitter’s vertical force the gears within the tilt move the fulcrum along a leaf spring to automatically adjust the tilt’s tension.

Introducing Cosm’s Leaf Arms are designed to offer as much comfort and ease as possible .

Studio 7.5 created Cosm’s Leaf Arms which feature a soft but firm cradle design that provides a large cosy resting place for your elbows.

The sling design makes holding a phone or book natural and comfortable and the angle of the arms means that they don’t get in the way of a desk

Cosm has achieved Ergonomics Excellence certification from FIRA  in addition to BS EN ISO9241-5:1999 and BS EN 1335 Part 1

In 2019 Herman Miller receives a Red Dot Best of the Best Product Design Award in the “Office Chairs” category


Sizing/Assembly & Warranty Information



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Delivery & Returns Information


Our standard delivery time on all orders FROM STOCK we aim to Deliver within 3-5 working days  (unless otherwise stated) MON- FRI  8AM TO 6PM and is  FREE OF CHARGE to mainland UK for all orders.

* Excludes the Scottish highlands which is chargeable.

If the item is ( Made to Order) you can find the lead time under the Add to Basket Button (these are as accurate as possible)

Products showing PRE ORDER are items we have coming back in to stock and the dates are on the product pages. When you buy a pre order item it is reserved and when it arrives with us we ship it on to you please allow 3 working days after date shown for delivery.

We also ship to NI, ROI and the Channel islands also Mainland Europe.

For more information, please visit our dedicated Delivery Information page.

Easy Returns

All items listed as in stock can be returned or exchanged easily. The item must be in the original packaging and in New Condition and unused! You have 14 days from the date the item was received. We can arrange the return for you.

Please advise of the order No, address and contact details in the email sent to logistics@officechairsuk.co.uk.

For more information, please visit our dedicated Returns, Exchange & Refunds page.