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Herman Miller · Office Chairs

Herman Miller Cosm High Back

Designed by Studio 7.5 · Herman Miller

Hot-desking and shared workspaces.

$1,925 – $2,400

  • Up to 350 lb
  • 12-year warranty
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Check price at Herman Miller ↗

Summary

A Herman Miller mesh chair that sets its own recline tension, with no tilt controls to learn.

Best for

  • People who do not want to set recline tension; Auto-Harmonic Tilt reacts to body weight.
  • Those who want neck and upper-back height; this is the tallest of three backs.
  • Shorter sitters; the store lists a seat height from 14⅞".
  • Buyers who want a 12-year warranty and a chair that arrives assembled.

Good to check first

  • Recline tension sets itself to your weight, so there is no tension knob to adjust.
  • The seat depth is fixed at 15½" (store listing); check it against your thigh length.

The trade-off

Simple, self-adjusting recline, with fewer manual settings than Aeron or Embody.

Value check

Lists from $1,925 at the US Herman Miller Store.

Price
$1,925 – $2,400
Load capacity
350 lb
Warranty
12 years

What Herman Miller highlights

  • Auto-Harmonic Tilt

    The tilt responds to your body weight automatically. Herman Miller says there are no manual tension adjustments to make.

  • Intercept suspension

    The seat and back use a breathable elastomeric suspension. Herman Miller says it conforms to give support.

  • Flexible frame

    The frame is sturdy but flexes with your movement. Herman Miller pairs it with the suspension so the chair moves as you shift.

  • Three back heights

    Cosm comes in low, mid and high back versions. The high back adds support up to the head and neck.

  • Arm choices

    Arms come as Leaf Arms, height-adjustable arms or fixed arms, or the chair can have no arms.

As described by Herman Miller on its official pages; not a Chairpedia assessment.

Before you buy

Fit (official)

  • Seat height 14⅞"–21" (store listing).
  • Seat depth 15½" (store listing).
  • Rated to 350 lb.

Delivery and setup

  • Ships fully assembled.
  • Weighs 35 lb.
  • 12-year warranty.

Returns (official policy)

  • Herman Miller Store: return items within 30 days.
  • Check return shipping terms at checkout; other sellers set their own.

Sources: Herman Miller Store, Cosm High Back ↗ (checked Oct 11, 2026) · Herman Miller, Cosm Chairs specs ↗ (checked Oct 11, 2026)

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Versions and options

  • Arm options

Specs

Size and fit
Sizes
Low Back, Mid Back, High Back
Seat height
14.8–21.4 in (37.6–54.4 cm)
Seat depth
15.9 in (40.4 cm)
Seat width
20.5 in (52.1 cm)
Back height
30.25 in (76.8 cm)
Load capacity
350 lb (158.8 kg)
Adjustments
Arms
Leaf Arms; Height-Adjustable Arms; Fixed Arms; No Arms7.3–11.7 in (18.5–29.7 cm)
Build and warranty
Warranty
12-year, 3-shift warranty, with limited exceptions
Chair weight
35 lb (15.9 kg)
Made in
USA (Herman Miller states it makes the Cosm Chair in the United States)

About Herman Miller

Founded
1923, when D.J. De Pree and Herman Miller bought the Michigan Star Furniture Company
Part of
MillerKnoll, since 2021

The company took Herman Miller's name after he and his son-in-law D.J. De Pree bought it in 1923. By mid-century it was known for modern design after George Nelson brought in Charles and Ray Eames, Alexander Girard and Isamu Noguchi. In 2021 Herman Miller became part of MillerKnoll.

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Questions

How much does the Herman Miller Cosm High Back cost?

It costs $1,925 – $2,400 at the US Herman Miller Store (chair (stool versions excluded); range across arms, frame and caster options), checked Oct 2026.

What is the Herman Miller Cosm High Back's weight capacity?

It is rated for 350 lb for the all configurations (US ), according to Herman Miller's official specifications.

What sizes or versions of the Herman Miller Cosm High Back are there?

It comes in low Back, Mid Back, High Back.

What do owners say about back pain with the Herman Miller Cosm High Back?

Back pain comes up in 4 owner review summaries. These are owners' own reports, not medical findings.

Where can I buy the Herman Miller Cosm High Back?

You can buy it from Amazon, the US Herman Miller Store or the Herman Miller Official. Check the configuration, price and return terms before ordering.

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Specs and prices come from the brand sources listed under Specs and next to the price; User Insights link to their originals. Confirm the exact configuration, seller and price before buying. Editorial policy

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