Cosm™ Chair


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Cosm™ Office Chair
Designed by Studio 7.5 for Herman Miller®

Sit in Cosm, and you just might forget you’re sitting in a chair at all. Its sophisticated ergonomic design instantly responds to your body, movement, and posture to provide natural balance and total support.

A tilt is to a chair what a transmission is to a car, and like transmissions, some are manual, and others, such as Cosm’s, are automatic. With other self-adjusting models, the chair decides how you should sit by forcing the body to conform to the tilt’s movement. Cosm’s Auto-Harmonic Tilt puts the person first and responds to them—no matter their posture—providing a balanced recline and personalized comfort. 

No matter who sat in the chair before you, how long you’ll be in it, or what you'll be doing, Cosm gives you instant comfort—anywhere you work.

Available Sizes 

Low Back — The low back chair fosters collaboration and casual movements through the wrap top.
Width: 26.7-29.3"
Depth: 15.5"
Height: 34-40.2"
Seat Height: 16.4-20.9"

Mid BackThe mid back chair provides support up to the scapular region.
Width: 26.7-29.3"
Depth: 15.5"
Height: 38.6-44.9"
Seat Height: 16.4-20.9"

High Back — The high back provides total back support including upper-thoracic support.
Width: 26.7-29.3"

Depth: 15.5"
Height: 44.9-51.2"
Seat Height: 16.4-20.9"

Available Finishes
(Frame, chassis, and base)
  • Graphite
  • White Frame & Chassis / Mineral Base
  • Glacier
  • Nightfall
  • Canyon
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
  • Available in three arm styles: Fixed, Fully Adjustable, and Leaf
  • Made in Michigan at a 100% green-energy facility

Additional Notes

  • Approximate 8-10 week lead time for production and shipping
  • Chair is tested and warranted for use by persons 350 pounds and under