Mid-Back Cosm Chair


$1,395.00 $1,185.75

Designed by Studio 7.5

Let the Mid-Back Cosm’s instantly responsive and finely tuned design make you forget you’re sitting in a chair at all. Support and beauty exist in harmony, making Cosm a functional sculpture. And with dipped-in-color, it can come in one hue from top to bottom.


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Mid-Back Cosm Chair

Mid-Back Cosm Chair

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$1,395.00 $1,185.75
Item Number: 100114987

Ready to ship in 4 weeks

Shipping Info:
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Item Number: FLC352SFPDR1DR1DR1O2R84506
Mid-Back Cosm Chair


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Packaging Type:
Packaging Dimensions:
26" x 21.75" x 33.75"
Package Weight:
Mid Back: 41 lbs
Assembly Required:
Care and Maintenance


With regular care and maintenance, your Herman Miller product will provide many years of superior performance and satisfaction. To maintain quality, please follow the cleaning procedures outlined here.

The instructions for the care and maintenance of Herman Miller products are provided to you as a service. No warranty is implied since results may vary.

Care and Maintenance Guide



User Adjustments
Total Height 38.9-45.5"
Width 26.7-29.3"
Depth 26.7"
Seat Height 14.8-21.4"
Seat Width 20.5"
Seat Depth 15.9"
Arm Height 7.3-11.7"


0 reviews Be the first to review the Mid-Back Cosm Chair
3.4 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Very disappointed
The chair came it broken and still waiting for replacement in which supposedly to be sent on 10/24/19 yet didn’t get any shipping detail as of now.
October 27, 2019
1 month ago
Response from Herman Miller
I'm so sorry to hear your chair arrived damaged. I do see that your replacement shipped on 10/24. I will reach out to you by email to make sure you have all necessary information and that the rest of your replacement process goes smoothly.
October 28, 2019
Melissa M
Lack of ergonomic support
The chair has only 1 function, adjustment of height, that's all. You can't even lock the chair upright.

No tilt limiter.
No tension control.
No adjustable lumbar.
No fully adjustable arms.
No seat depth adjustment.

If the chair's default adjustment is not suitable, which was what I was facing, that's it.
September 4, 2019
Response from Herman Miller
I'm so sorry the Cosm Chair isn't working out for you. The Cosm Chair was truly designed to be a fully automated chair, self-adjusting with no necessary adjustments other than seat height. I'm reaching out to you by email to learn more about your purchase.
September 5, 2019
Melissa M
Chair is great
The chair is much better than I hoped it would be. I have a bad back and this chair was very helpful.
July 26, 2019
4 months ago
Renata R.
I have no idea why I let my back suffer all this while without a proper work chair. My back issues have improved dramatically, especially my neck and slump. They must have done a good amount of research to create this specific chair, it provides comfort and ergonomic back care for sure. I love the mesh feature, it cradles me like a solid hammock throughout the day and I'm so glad I've made the investment.
June 25, 2019
Only one flaw, but it's major
If it weren't for one glaring flaw, this would be the best chair I have ever sat in. The mesh provides remarkable support while remaining breathable. The construction felt bullet proof. The look is super sexy.

The issue? You can't lean back without any amount of weight or you end up fully reclined. This was intentional on HM's part as the chair is supposed to sense your weight and recline the perfect amount. Trouble is, it doesn't work right. Mine let me fall all the way back after putting maybe 40% of my weight backward.

This chair is perfect, except that I had to return it.
March 19, 2019
Comfort and Style
Amazing! I have lower back issues that are made worse from sitting long hours at work. I wanted something with lumbar support, but didn’t look orthopedic. For the first time in years I can sit for hours and have no back pain! And the chair looks so stylish.
December 16, 2018
1 year ago
Love it
I just built a new house and ordered this chair for my office. I love how this chair is comfortable without having a dozen knobs to adjust. It just works.
November 11, 2018
1 year ago

Product Q&A

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Browse 2 questions Browse 2 questions and 2 answers
Where is the Cosm chair manufatured?
Peter T on Nov 14, 2018
Best Answer: The Cosm Chair is manufactured at our headquarters in Zeeland, Michigan.
is the height adjustabile?
Robert P on Jul 18, 2019
Best Answer: The seat height is adjustable on the Cosm chair. The seat height ranges from 14.8-21.4".