Herman MillerCosm Office Chair, Nightfall

Product review details, this product has received, on average, 5.00 out of 5 star rating.
1 Review

Save 20% until 14 April 2026

null

£1,599.00£1,279.20

Price
£1,279.20
  • 12 Year Parts Guarantee
  • Standard delivery £19.95

Image gallery

Take a closer look

Information from the brand

Product description

Product code: 81639201

Sit in Cosm, and you just might forget you’re sitting in a chair at all. Enjoy seating simplicity without sacrificing the signature experience you've come to know and love from Herman Miller.

Cosm instantly responds to your body, movement, and posture, delivering a completely new comfort reference. And that comfort translates equally for any person and across the entire office (or home) landscape. Cosm feels balanced and consistent from person to person, no matter which chair you sit in, who sat in it before you, or where you choose to work.

The auto-harmonic tilt works in conjunction with Cosm’s flexible frame and intercept suspension material to create total comfort and support. The tilt instantly and automatically provides balanced support and movement depending on your body and posture. The intercept suspension is breathable and temperature-neutral, while the continuous form of the suspension conforms to each person’s body, so you can sit down, get to work, and forget about gravity.

Studio 7.5 was inspired by Albert Einstein’s belief that "everything should be as simple as possible, but not simpler". They worked diligently to design a chair as intuitive as possible - both in form and function. There is complex engineering required to provide an experience that looks and feels natural, intuitive, beautiful, and familiar.

Want to see it first?
You may want to see and get a feel for the furniture in one of our shops before ordering. If you do plan on doing this we recommend giving us a call on 03452 661805 as not all our ranges are on display in our shops. We'll be able to tell you where the range you'd like to view is on display.

Product specification

Adjustable
Armrests, Seat Height, Backrest
Assembly type
Fully Assembled
Brand
Herman Miller
Care instructions
Base, frame and arms: wash surface with a soft cloth, mild detergent and warm water. Suspension material: vaccum fabric using an upholstery attachment. Do not soak with water or any liquid solution
Castor or foot type
Plastic Castor
Chair design
Ergonomic
Composition
Mesh
Country of origin
United Kingdom
Dimensions
H131 x W73.4 x D67.8cm
Guarantee
12 year parts guarantee
Height of seat
41cm
Lumbar support
Yes
Maximum user weight
159.0kg
Movement type
Swivel
Recommended hours of use
Up to 24 per day
Seat height range
40.9-54cm
Seating width
52cm
Weight
16.10 kg

Useful guides

Delivery and returns

Delivery and collection options

Standard Delivery
£19.95
Delivery to UK mainland locations from 3 working days of your order, delivered on the day of your choice, Monday to Saturday. Choose your preferred delivery day in checkout. 2-hour and 4-hour slots are available for an additional cost. Availability varies by postcode. Additional charges apply to locations outside of UK mainland.
Click & Collect
Not available for this item
Local Collection Network
Not available for this item

Returns and refunds

You can return or exchange an unwanted item within 30 days of receiving it.

Please allow up to 14 days from sending the item to receive your refund.

How to return your item

Small items

Return a small item you bought online for free to a John Lewis or Waitrose shop, or one of our return locations. You can also arrange a collection using Evri or Royal Mail.

Large items - items delivered by two people, such as appliances and furniture

We'll collect large items from you. Collections are free if your item is damaged or faulty. If not, we charge a collection fee. To arrange a collection, please contact us.

Reviews|
Product review details, this product has received, on average, 5.00 out of 5 star rating.
The average rating is 5 out of 5