Cosm™ Chair, High Back

Designed by Studio 7.5 for Herman Miller®


Item Number: 100114989
$1,395.00 $1,185.75
Free Shipping
Free Shipping
Enjoy free shipping on specially marked products. Offer is valid on orders shipped via FedEx within the contiguous U.S.; Alaska, Hawaii and Puerto Rico are excluded. This offer is nontransferable and cannot be combined with other promotions or discounts, nor applied to past purchases or future deliveries. At DWR Outlets, offer is valid only on regularly priced items.
Returns and Exchanges

Returns and Refunds

We want you to be delighted with your new purchase. If you need to make a return, we're here to help. Please review your item(s) upon delivery. If there is an issue with your order, contact your local DWR Studio or our customer service team at 800.944.2233  or service@dwr.com within three (3) days of receipt. If you receive a damaged, defective, or incorrect item, we’ll make it right.


We have a few things to keep in mind during the return process:


- Returns must be received in original condition within 30 days of receipt.

- Shipping charges are non-refundable. You will be responsible for outbound and return shipping and delivery charges.

- Returns are accepted only at our warehouse—not at DWR Studios, DWR Outlets, or company headquarters.

- Your refund will be reduced by a restocking charge equal to 10% of the purchase price (accessories, bedding, Sonno mattresses*, and towels are exempt).

- Credit card orders will receive refunds in the form of a credit back to the original account.

- Check and cash payments will be returned via a refund check or DWR Merchandise Credit.

- Be sure to retain the original packing materials, receipt, and all merchandise tags for returns. 


What can’t you return or exchange?


- Custom or special order furniture.

- Floor samples and items purchased from DWR Outlets and eBay.



What if I need to cancel my order?


We can accept cancellation of your order for items that have not yet shipped or are on backorder. In-stock items normally ship within 24–48 hours after an order has been placed.  Once an item has shipped, cancellation is not possible. 


- If you order by credit card, your card will be charged as each item is shipped.

- Custom and special order items cannot be canceled.



What about the 100-Night Sonno® Mattress* Sleep Trial?


Try Sonno risk-free for up to 100 nights (with a minimum of 30). If you decide to return the mattress, contact your local DWR Studio or call 800.944.2233 for a refund and free pickup. 


- One sleep trial per household annually. 

- Delivery fees nonrefundable.



Risk of Loss


All items purchased from Design Within Reach are made pursuant to a shipment contract. This means that the risk of loss and title for such items pass to you upon our delivery to the carrier. If your order is placed with a purchase order, the shipping term of FOB DWR shipping dock will supersede any shipping terms in your purchase order.



Current Shipping page



Step 1: Select your BackHeight
Step 1: Select your Height Adjustment
Step 2: Select your Seat Depth
Step 2: Select your Frame

Compare colors and materials.

Request Free Swatches

Add to cart options


Product Actions

In Stock

$1,395.00 $1,185.75
Item Number: 100114989

In Stock

Shipping Info:
Clicking on the following button will update the content above.
It is in stock and ready to ship, the message "It is in stock and ready to ship!" That means its on hand in our warehouse and will leave within 48 hours of purchase.

Additional Information


A true revolution in seating, the Cosm Chair (2017) is the work of Studio 7.5, the Berlin-based design team that believes strongly in freedom of movement – so much so that their name comes from an idea to place their office in a 7.5-ton truck they could drive from client to client. Unlike chairs that require many adjustments to get the right fit, Cosm instantly responds to your body, movements and posture to provide natural balance and total support, letting you sit down, get to work and simply forget about gravity. The chair for everyone, it’s designed to serve as a smart universal solution for home and corporate offices. ANSI and BIFMA approved. Backed by a 12-year manufacturer’s warranty. Made in U.S.A.

  • Time magazine named Cosm one of the 100 Best Inventions "that are making the world better, smarter and even a bit more fun" in 2019.


Studio 7.5
Studio 7.5


Studio 7.5 operates with few rules. In fact, there’s just one rule: “Join lunch,” says Carola Zwick, one of the partners of the company, which is based in Berlin. “Lunch is special. It’s eating and chatting and getting everybody on the same page. And that’s every day. It’s really the only structure we have in the office.” When she says that, ...

Learn More

Product Details


H 45"–51.25" W 26.75" D 26.75" Seat H 16.5"–21"


Injection-molded glass-filled polypropylene frame; Intercept polyester elastomeric seat mesh; seat tilt mechanism; powder-coated or polished die-cast aluminum base; nylon casters for carpeted floors or quiet-roll nylon casters for carpeted and hardwood floors.

Shipping Info

View Shipping Options
It is in stock and ready to ship, the message "It is in stock and ready to ship!" That means its on hand in our warehouse and will leave within 48 hours of purchase.


0 reviews Be the first to review the Cosm™ Chair, High Back
3.8 / 5.0
22 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Major Flop by HM
The Cosm chair is awful. Any movement is multiplied and felt all around. The leaf arms are terrible placed, not adjustable, and are simply uncomfortable. The mid back and low back are better, but still one of Herman Miller's worst chairs.
November 26, 2019
Response from Design Within Reach
Thank you for getting in touch to let us know about the trouble you’re having with your Cosm Chair. That sounds really frustrating. Please email us at service@dwr.com with your order details - happy to help from there!
January 2, 2020
Great chair, great support, great style
Great chair, great support, great style. 6'2" and 225lbs and works perfectly. Would recommend!
August 13, 2019
Too dependent on weight distribution and not for tall people
I've had this chair for about 7 months now and finally understand it. I'm 6'5'' and bought the high back model with the leaf arms. I wanted to love this chair and wanted something I could write code in for long hours. Unfortunately, your arms are not normally close enough to your body when coding or moving the mouse, this throws off your weight distribution and the seat pushes you forward. I do believe this chair is better as a meeting chair or for casual sitting. The material is incredibly soft and the chair is well made.

The first challenge to this chair is that I could not raise its height to a comfortable position. That was solved by buying taller casters which added about 1 inch to the height of the chair. Before doing that I did learn of a local authorized retailer selling the chair with a taller height range module.

The second challenge because of my height is the short seat depth. But I only notice it when the chair is pushing me forward. The key is to prevent your arms from being too far from your body and throwing off the weight distribution which pushes you forward. I realized that my desk with its contour shape made this more challenging and I do not recommend using a contour desk with this chair.

I did not like the leaf arms and took them off. I think they're designed for people with average length arms not long arms because my elbows rest on the lower edge of the arm which is where the mesh meets the hard frame.

I gained a greater appreciation for the chair after making those three adjustments
July 25, 2019
This is my third Herman Miller chair. I had high expectations based on reviews, but unfortunately this one disappoints. The seat is too short, and leaning is a disaster. There is no such thing as being all things for everyone. A chair needs adjustments. The Setu is way better with the same proposition. In fact, I bought a 200 chair at Staples that trumps the Cosm. Sorry HM. Customer service was fantastic by the way.
July 11, 2019
Amazing feat of design and engineering.
I've had my Cosm High-Back for about two weeks now and I am totally satisfied. I have an Aeron at work and decided to try something different for my home office chair and I'm glad I gave this one a try. There is only one adjustment, for height, but somehow it's always comfortable whether I'm leaning forward, back, or to the side. It looks very sleek as well. This is my "buy it for life" office chair and I think I made the right choice.
July 4, 2019
Great everyday chair!
I was a bit hesitant to purchase the High Back Cosm Chair (with the adjustable arms) because it was a newly released, expensive chair that didn't have many reviews on it. I am so happy that I made the leap -- this chair is very comfortable to sit in for any amount of time. (For reference I am F, 5'6", ~125 lbs) The lumbar support fits perfectly to the small of my back, and my bum no longer hurts after sitting for long hours. It's 100% worth the price and a beautiful piece to look at.
June 7, 2019
Nice looking but not so comfortable for the price
I recently bought this chair and for the price I think it is not worth it. I happen to have the same problem as other in the previous reviews. I'm 6'1" and the seat depth is really too short. Because of that I keep moving to re-ajust myself in order to fit back in a good position. You also feel like being pushed by the chair into a leaning forward position. The chair has a really nice look, but in the end it's daily usage I found it disappointing.
April 29, 2019
The Finest Chair I Have Ever Owned
I have been in the contract office furniture industry for many years and have tried many office chairs. I fell in love with the Cosm the first time I saw it. The fit and finish is remarkable and the design in beautiful.
I've been using this chair in my home office for over a month now, and I am even more impressed. All I can say is that it delightfully comfortable, simple, intuitive and responsive. Whether typing or kicking back, this chair is always there for me, in a humble and unassuming way.
March 20, 2019
REview on my Cosmo High back chair
This is the third chair that I have purchased and its my least favorite, in fact I really think I hate it. I hate the seat portion which is not long enough to reach my knees and has not adjustments to length it as my previous one did, in fact I have gone back to my previous one because of this. Although I order the arms (butterfly) I don't like them at all …and last but not least the movements with my body is rather stiff but I would guess it because its new ??? and there is no adjustment s
March 11, 2019
Wonderful Chair!
I'd like to preface this review by saying that I'm the type of guy who normally thinks it would be cool to write a review, but never actually ends up carving out the time to write one. That being said, this chair was excellent enough to warrant the time to sit down and recommend it.

I also own the Aeron desk chair and know a lot of people are going to be wondering, "Is this a better chair?" Truth be told, they're entirely different chairs. This one is more focused on fitting you when you sit down in it (virtually no adjustments) whereas the Aeron has near infinite adjustability. This chair seems to fit me well and is likely my favorite of the two, but I'd be hard pressed to call it a "better" chair (apples to oranges). For the record, I'm 6'2 and a little over 200lbs and have no problem fitting (although I don't think a smaller person would either).

Thanks Herman Miller!!!
March 6, 2019

Product Q&A

Product Q&A

Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!

Expand Your Collection