Low-Back Cosm Chair


Designed by Studio 7.5



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Low-Back Cosm Chair

Low-Back Cosm Chair

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Item Number: 100114976

Ready to ship in 7 weeks

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Item Number: FLC142SFPG1G1G1BKS84501


A balance of sculptural form and effortless function, the Low-Back Cosm gives you instant comfort—anywhere you work. It was designed to be as ergonomically innovative as it is beautiful and automatically adjust to anyone who sits down.
Key Features
  • 12-year warranty
  • Named 100 Best Inventions by Time Magazine in 2019
  • Auto-Harmonic™ tilt mechanism automatically adjusts
  • Flexible frame
  • Continuous and breathable seat and back
  • One adjustment for height
  • Wrap-top facilitates casual collaboration
  • Available in three arm styles: Fixed, Fully Adjustable, and Leaf
  • Dipped-in-Color option
  • Made in Michigan at a 100% green-energy facility
  • For questions about lead times, in-stock options or delivery please give us a call at 888.798.0202.
Low-Back Cosm Chair


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Packaging Type:
Packaging Dimensions:
26" x 21.75" x 33.75"
Package Weight:
Low Back: 40 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 34-40.6"
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 Low-Back Cosm Chair
4.2 / 5.0
11 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Cosm chair review
Really good looking chair. The design is well done.
Shipping from Herman Miller was fast despite the coronavirus situation.
June 1, 2020
1 month ago
amazing product
The chair lives up to the design story. Very comfortable and so simple.
May 10, 2020
1 month ago
Perfect chair
After working from home using an antique office chair that I had never used much before, I developed iliac crest pain that made it clear that I needed to invest in a new chair. A friend had asked for recommendations on social media and various connections recommended HermanMiller. Given that buying an expensive chair without being able to try it out first is a big risk, I did rely on these personal recommendations. The Low Back Cosm Chair appealed to me for two reasons: the color/design and the fact that it self-adjusts everything but the height. Both features did not disappoint. I am 5'4 and the chair gives me plenty of back support. It moves nicely on my old and uneven wooden floors. My back pain immediately got better, although I had to spend extended hours working. I am extremely satisfied with this purchase and this is the most supportive, comfortable, and stylish chair I have ever used or owned.
May 4, 2020
2 months ago
Supportive and Sharp-looking
Why I selected this chair for my home office is because it is not fussy, versatile, and is a feature design piece. My first sit was stiff (I have a small frame) and found it took a lot of muscle to lean back and stay there since it is self-adjusting. However with an ottoman it is much easier to lean back. I was unsure of the Canyon red but it is stunning and more subtle in person. Will be happy to have this chair in my home for a long time.
May 4, 2020
2 months ago
Cosm chair rave
Amazingly comfortable, every hours at a time! Every bit as good as my Aeron chair at work, at less than half the cost. Perfect especially for the home office .
May 2, 2020
2 months ago
Best office chair!
Love it! Feels like I’m floating. Since my husband has been WFH his nerve damage in his leg has almost disappeared. And it’s beautiful.
April 18, 2020
2 months ago
Love this product!
Love this chair. It's better than expected!
February 27, 2020
I’ve been using the Cosm for a little over 6 months as an office chair and am thoroughly impressed at how comfortable it is, and how good my posture has been.

I’ve previously used the Aeron and the Mirra (along with a few other chairs from different brands) and love how simple the Cosm is - I don’t have to worry about whether or not the lumbar is dialed in correctly.

As a bonus, it doesn’t feel particularly technical or office-y making it perfect for a home office or study space.
February 11, 2020
This is the worst chair I've ever had to sit in. The office were I work bought these for everyone. My back hurts all day. I constantly feel like I'm going to fall off of it. I'm tall and I have really long legs. This chair may be alright if your only 5'5 or under. I would give it negative stars if I could!!!!
September 13, 2019
Response from Herman Miller
I'm so sorry to hear the Cosm Chair isn't working out for you. I'm reaching out by email to talk with you further about this purchase.
September 16, 2019
Melissa M
Not bad but not for me
I am giving this a one rating, not because it is bad, in fact I think its the most attractive office chair available. However when I went to test it out (mid height), it did not provide any lower back support. I have had two surgeries. I currently use a 20 year old Aeron Chair. I needed a less obtrusive chair for an apartment. I tried the Setu (the rep said it was either going to be a Aha moment or I would not like it). It was an Aha moment and it works well for me. Chairs are very particular to the person. I wish for the simple design of the Cosm Chair it worked, but it did ot.
April 20, 2019
Response from Herman Miller
We're sorry to hear that the Cosm chair didn't work out for you but so glad to hear you are enjoying your Setu chair!
April 22, 2019
Stephanie S

Product Q&A

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Browse 4 questions Browse 4 questions and 5 answers
Is this product available in custom colors? Will be any other colors available in future?
Atreides on May 6, 2019
Best Answer: The Cosm chair is available in six colors: Studio White, Canyon, Glacier, Graphite, Carbon, and Nightfall. There are not currently plans for additional colors.
Is the "studio white/mineral" color white or grey? It looks like white in one of the photos but grey in the other.
Colleen R on Mar 29, 2019
Best Answer: There is a picture of this chair with a white top, and a white base as well, with a lighter-color suspension fabric (this is in addition to the mineral base). Can I order this chair in an all studio white (top and base with a silver piston) like you show in the picture? Otherwise, why is the picture presented. Please note: I realize that there is a picture with a white/mineral combination, but there is another picture with a white/white cosm chair
How much weight can this chair hold?
Jay R on Feb 8, 2019
Best Answer: The Cosm chair is tested and warranted for use by users 350 pounds or less.
would this work for dining room table chair?--we spend lots of hours there
toni ray t on Jul 22, 2019
Best Answer: The Cosm chair would work for a dining room chair. It needs minimal adjustments so it can easily accommodate a range of users. I do recommend reading through the care guide first as a dining room chair is more susceptible to spills and in turn would need more cleaning. Here is a link to the guide - https://www.hermanmiller.com/content/dam/hermanmiller/documents/materials/reference_info/care_cosm.pdf