Herman Miller Cosm High Back Chair Canyon wit

$2,990.00

GST included. Shipping calculated at checkout.

12-year warranty on all components

Delivered fully assembled

Genuine Herman Miller, brand new

Low stock - 5 items left

Shipped fully assembled in protective packaging from our Australian warehouse. Delivery times vary by location. Returns accepted within 30 days in original condition.

Chair Dinkum provides a 12-year warranty covering the frame, mechanism, gas lift, base, and armrest structure. As these chairs are sourced as international parallel imports, warranty support is provided directly by Chair Dinkum, not through Herman Miller's standard registration process.

Instant Comfort, Zero Adjustments

12-Year Warranty

Every component is covered for 12 years: frame, mechanism, gas lift, base, and arms. Warranty support is provided directly by Chair Dinkum.

Delivered Assembled

Your Cosm arrives fully assembled in protective packaging. Open the box, place it at your desk, and sit down. No tools, no instructions, no waiting.

Sustainably Made

The Cosm is built from recycled materials and is designed for disassembly at end of life. It carries multiple environmental certifications.

Designed to Disappear

The Cosm was designed by Studio 7.5 with a single goal: create a chair so intuitive that you forget you are sitting in it. Auto-Harmonic Tilt responds to your body weight and posture without any manual adjustment. Lean back and the chair reclines with balanced resistance. Lean forward and it follows. There are no knobs to turn, no levers to pull. You just sit down and work.

Intercept Suspension

The Intercept suspension is a continuous sheet of flexible material that spans from the seat to the top of the back. Unlike traditional chairs that use separate seat and back components, the Cosm provides uninterrupted support through every posture. The material flexes at the transition point between seat and back, conforming to your body shape without pressure points.

Leaf Arms

Leaf Arms are designed to move with you rather than restrict you. The flexible arm pads deflect when you lean or reach, providing support without creating a barrier. They are height-adjustable and pivot inward or outward to match your preferred working position. The result is arm support that feels natural rather than mechanical.

This model at a glance

Every Cosm from Chair Dinkum is the High Back version with Leaf Arms.

BACK HEIGHT

High Back

ARM TYPE

Leaf Arms

TILT

Auto-Harmonic

DELIVERY

Fully Assembled

Features & Specifications

All Cosm chairs from Chair Dinkum are the High Back version with Leaf Arms and Auto-Harmonic Tilt. Delivered fully assembled.

Key Features

– Auto-Harmonic Tilt (self-adjusting recline)
– Intercept suspension (continuous seat-to-back support)
– Leaf Arms (flexible, height-adjustable)
– High back for full upper-body support
– Frameless design for unrestricted movement
– Die-cast aluminium base
– Carpet casters included (hard floor available)
– Delivered fully assembled in protective packaging

Specifications

SEAT HEIGHT	394-508mm
SEAT WIDTH	502mm
SEAT DEPTH	419-470mm
BACK HEIGHT	597mm
OVERALL HEIGHT	1016-1130mm
OVERALL WIDTH	736mm
WEIGHT	16.3kg
WEIGHT CAPACITY	136kg
WARRANTY	12 years
DESIGNER	Studio 7.5, Berlin
COLOUR	Canyon

Just launched

The Chair That Thinks for You.

No adjustments. No learning curve. The Cosm uses physics and material science to deliver personalised comfort the moment you sit down.

VIEW ALL HERMAN MILLER CHAIRS

Frequently Asked Questions

Auto-Harmonic Tilt is the Cosm's self-adjusting recline mechanism. It uses your body weight to calibrate the tilt resistance automatically. Heavier users get more resistance, lighter users get less. There is no tension knob to adjust. You simply sit down and the chair adapts to you.

Yes, this is a 100% genuine Herman Miller Cosm. We source our chairs as international parallel imports, which means they are not supplied through the standard Australian authorised-retail channel. Warranty support is provided directly by Chair Dinkum.

Chair Dinkum provides a 12-year warranty on all Cosm chairs we sell. This covers the frame, tilt mechanism, gas lift cylinder, base, and armrest structure under normal commercial use (8 hours per day, 5 days per week). If any covered component fails within the warranty period, contact us directly.

Yes. The Cosm is delivered fully assembled in protective packaging. You simply open the box, remove the packaging, and place it at your desk. No assembly required.

Canyon is a warm, earthy brown-red tone. Glacier is a cool, light grey. Both share identical ergonomic features, build quality, and specifications. The choice is purely aesthetic.

The Cosm is ideal for people who want excellent ergonomic support without any setup or adjustment. It suits shared workspaces, hot-desking environments, and anyone who finds traditional chair adjustments confusing or tedious. It is also excellent for people who move frequently between postures throughout the day.

Herman Miller Cosm High Back Chair Canyon with Leaf Arms