The Herman Miller Cosm Chair is a next-generation ergonomic office chair designed to respond intuitively to your body. Unlike traditional task chairs, Cosm eliminates the need for manual adjustments by using advanced self-adjusting technology. From the moment you sit, the chair automatically adapts to your posture, movements, and weight—delivering effortless comfort throughout the day.
With its Auto-Harmonic™ tilt, Intercept suspension, and flexible frame, the Cosm Chair supports natural movement and balanced posture, making it ideal for modern offices, creative studios, and long working hours.
Key Ergonomic Technologies
Auto-Harmonic™ Tilt
Automatically adjusts tension and recline resistance based on your body weight and posture. No knobs, levers, or manual tuning required.
Intercept Suspension
A breathable elastomeric suspension system that continuously conforms to your body, promoting dynamic spinal alignment and reducing pressure points.
Flexible Frame Design
Slim yet durable frame that moves with you, allowing natural motion while maintaining consistent support.
Back Height Options
Choose the back height that best matches your support needs:
Back Height
Best For
Support Level
Low-Back
Casual seating, collaborative spaces
Lower back support
Mid-Back
Daily office use
Mid-back and shoulder support
High-Back
Long hours, executive use
Full upper body & shoulder support
Color & Finish Options
The Cosm Chair features a Dipped-in-Color design, creating a unified, sculptural appearance.
Color / Finish
Description
Canyon
Warm red tone
Glacier
Light blue
Nightfall
Deep dark blue
Carbon
Charcoal gray
Graphite
Dark gray
Mineral
Light gray with white accents
Studio White
Clean, minimalist white
Semi-Polished Alloy
Industrial metallic finish
Silver Alloy
Sleek silver metallic finish
Arm Style Options
Select the arm configuration that best suits your workspace and posture preferences:
Arm Type
Features
Leaf Arms
Minimalist design, flexible support
Height-Adjustable Arms
Adjustable height for ergonomic alignment
Fixed Arms
Stable, fixed-position support
No Arms
Maximum freedom of movement
Materials & Construction
Intercept Elastomeric Suspension: Seat and back
Flexible Frame & Base: Lightweight yet strong construction
Premium Finish Materials: Depending on selected color and alloy option
Designed for durability, breathability, and long-term performance.
Dimensions & Measurements
Overall Chair Dimensions
Back Height
Chair Height
Width
Depth
Low-Back
34–40.6 in
26.7–29.3 in
26.7 in
Mid-Back
38.9–45.5 in
26.7–29.3 in
26.7 in
High-Back
45–51.6 in
26.7–29.3 in
26.7 in
Seat & Arm Measurements
Feature
Measurement
Seat Width
~20.5 in
Seat Depth
~15.9 in
Arm Height
~7.3–11.7 in
Weight Capacity
Maximum User Weight
Up to 159 kg / 350 lb
Warranty Information
Backed by Herman Miller’s long-term quality assurance
Why Choose the Herman Miller Cosm Chair
Fully self-adjusting ergonomic design
No manual controls—effortless comfort
Multiple back heights, colors, and arm options
Breathable suspension for all-day seating
Ideal for modern, design-focused workspaces
Built for long-term durability with a 12-year warranty
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