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Herman Miller Cosm Chair

The Chair for You

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.

Herman Miller Cosm Chair
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Forget Gravity

Cosm’s Auto-Harmonic Tilt, Intercept suspension, and flexible frame work together to give you a feeling of weightlessness.

Auto-Harmonic Tilt

The tilt instantly and automatically provides balanced support and movement, depending on your body and posture.

Intercept Suspension

Breathable and temperature-neutral, the continuous form of this elastomeric suspension eliminates the gap between the seat and back, conforming to each person’s body to provide dynamic spinal support.

Flexible Frame

The thin but strong frame feels nearly non-existent and offers support while flexing so you can comfortably move your upper body.

A grouping of Nightfall navy blue, Canyon red, and Glacier light blue Cosm Chairs.


Colorful Cosm

Cosm is available in one hue from top to bottom to further cement the unity of the design and the sculptural quality of the chair. The designers collaborated with Herman Miller's materials team to land on three dipped-in-color hues—Canyon, Glacier, and Nightfall.

Introducing Leaf Arms

To offer as much comfort and ease as possible, Studio 7.5 created Cosm's Leaf Arms, which feature a soft but firm cradle design that provides a large, cozy resting place for your elbows. The sling design makes holding a phone or book natural and comfortable, and the angle of the arms means they don’t get in the way of a desk when it’s time to get back online.

A close up of a Nightfall navy blue Cosm chair with leaf arms.


Front and side view line art of a low-back Cosm Chair.


Depth: 26.7"

Width: 26.7–29.3"

Height: 34–40"

Front and side view line art of a mid-back Cosm Chair.


Depth: 26.7"

Width: 26.7–29.3"

Height: 38.6–44.9"

Front and side view line art of a high-back Cosm Chair.


Depth: 26.7"

Width: 26.7–29.3"

Height: 44.9–51.2"


We stand behind the quality and performance of our products with a 12-year, 3-shift warranty, with limited exceptions.

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