Cosm Chair Specs

Here at Office Chairs UK, we have a wide range of Herman Miller Cosm office chairs that are made to offer instant comfort. With its innovative Auto-Harmonic Tilt, continuous suspension seat, and sculptural colourways, the Cosm is as much a design piece as it is a high-performance work chair.

See the full Cosm Chair specifications below to help you choose the right model and configuration for your needs.

Materials & Colour Options

Textiles

The Cosm chair uses Herman Miller’s Intercept Suspension, a breathable and supportive mesh available in a range of colour options. Choose from Canyon, Glacier, Nightfall, Carbon, Graphite, or Mineral suspension to create a look that blends comfort with style. Each suspension material is designed to move with the sitter while maintaining a sleek, lightweight aesthetic.

Finishes

To complement the suspension, the Cosm offers a variety of frame, arm, and base finishes. These include Canyon, Glacier, Nightfall, Carbon, Graphite, and Mineral, alongside the crisp Studio White finish. For a more premium touch, you can also select Semi-Polished Alloy or a durable Silver Alloy finish, giving your chair a refined and contemporary edge.

Cosm Chair Features

Auto-Harmonic Tilt

The Cosm’s defining innovation, the Auto-Harmonic Tilt, automatically adjusts to each sitter. Without any manual controls, it balances movement and posture instantly, providing continuous support whether you lean forward, recline, or shift position throughout the day.

Intercept Suspension

Made from a breathable elastomeric mesh, the Intercept Suspension forms a continuous seat and back that adapts to your shape. It eliminates pressure points, maintains airflow, and delivers responsive spinal support for long-lasting comfort.

Flexible Frame

Strong yet slim, the Flexible Frame almost disappears from view while still giving the support you need. It flexes naturally with your upper body, allowing you to move freely without restriction.

Leaf Arms

Unique to Cosm, Leaf Arms provide a soft but supportive cradle for your elbows. Their generous surface offers a comfortable resting place while maintaining the clean lines of the chair’s sculptural design.

Dipped-in-Colour

Every Cosm chair is available in a unified, dipped-in-colour aesthetic. From top to bottom, the suspension, frame, arms, and base are finished in one hue, giving the chair a striking, cohesive appearance.

Cosm Chair Options

Back Heights

The Cosm chair is available in three distinct profiles, allowing you to choose the level of support that suits your work style:

Low-Back – Compact and casual, perfect for collaborative spaces or shorter sitting periods.
Mid-Back – The most versatile model, offering balanced support for everyday use.
High-Back – Provides extended coverage for the upper back, shoulders, and neck, ideal for long hours at the desk.

Arm Styles

We offer a range of Cosm arm options so you can customise comfort and appearance:

Leaf Arms – Unique to Cosm, these flexible arms cradle the elbows in a wide, supportive surface.
Height-Adjustable Arms – Adjust easily for a tailored ergonomic fit.
Fixed Arms – Minimal and sleek, providing steady support.
No Arms – A simple option that maximises freedom of movement and space efficiency.

See the Cosm in Action

The Herman Miller Cosm chair is designed to respond to your body the moment you sit down, no adjustments required. This short animation demonstrates how the Auto-Harmonic Tilt, Intercept Suspension, and Flexible Frame work together to deliver seamless comfort and support.