Condition: BRAND NEW
READY STOCKS — Available for immediate delivery:
- Leaf Arm Chair: Selected colours only — please contact us to check availability.
- Adjustable Arm Chair: Red, Graphite, Glacier, White
PRE-ORDER — Delivery lead time approximately 3–4 weeks upon order confirmation:
- Adjustable Arm Chair: Carbon, Nightfall
- Leaf Arm Chair: Selected colours — please contact us to check availability.
Herman Miller Cosm Chair
The Herman Miller Cosm chair features a sophisticated, ergonomic design that instantly responds to your body, movement, and posture — providing natural balance and total support throughout the day.
Its Auto-Harmonic Tilt mechanism delivers intuitive, balanced support that adapts automatically to your body and sitting posture. Paired with a continuous elastomeric suspension that eliminates the gap between seat and back, the Cosm offers dynamic spinal support in a breathable, temperature-neutral manner. The thin yet strong frame supports your upper body while flexing, allowing you to move comfortably and freely.
With a range of configurations to choose from, select the Cosm chair that best suits your usage and needs. A great chair is one that supports a healthy posture while keeping you truly comfortable — even through long hours of sitting.
Key Features
Flexible Frame
The thin yet remarkably strong frame feels nearly non-existent. It offers support while flexing, allowing you to comfortably move your upper body without restriction.
Auto-Harmonic Tilt
A self-adjusting mechanism that instantly and automatically provides balanced support and movement based on your body, posture, and the way you sit. This finely tuned comfort lets you move freely without the need to twist and turn any knobs. The only lever on the chair adjusts the height — sit down, get to work, and forget about gravity.
High-Back Design
The high-back fits like a glove, providing upper-thoracic support along with a sense of comfort and privacy.
Versatile Armrest Options
Leaf Arms
Redefining the task chair arm, Studio 7.5 developed Cosm's Leaf Arms to provide a large, comfortable resting place for your elbow. The soft yet firm cradle design stabilizes your body and allows you to place your elbow wherever it is most comfortable. The fixed design also turns the arms into handles, making it easy to get in and out of the seat.
Height-Adjustable Arms
The Height-Adjustable Arms adjust 4.4 inches vertically — from 7 inches to 11.4 inches above the seat — giving you the ability to support your arms at a comfortable height without straining your shoulders.
Dimensions
| Overall Height | 1143 – 1311 mm |
| Overall Width | 734 mm |
| Overall Depth | 678 mm |
| Back Rest Height | 767 mm |
| Seat Height | 409 – 544 mm |
| Seat Width | 521 mm |
| Seat Depth | 404 mm |
| Maximum Capacity | 159 kg |
| Product Weight | 16.1 kg |
Warranty
12-Year Official Herman Miller Warranty
Coverage
- 12-year parts warranty on all functional components.
- The warranty covers the function of the chair, not wear and tear — especially on the mesh fabric. Fabric endurance is measured by rub tests, and all fabrics used are certified to endure approximately 200,000 rubs — roughly 8× the industrial standard for high-traffic-area chairs. The fabric will not deteriorate without misuse.
- We are unable to warrant against light scratches sustained during transit. We work with our couriers to minimise such occurrences, but minor cosmetic blemishes from shipping are beyond our control.
- Leather material is not warranted against damage from improper treatment, usage, or lack of proper leather care. As with any real leather product, perfect grain pattern cannot be guaranteed.
Key Differences from Official Local Distributor
- We offer a 1-year labour warranty — same as the local distributor. After the first year, a $50 service fee applies for our technician to come on-site.
- Replacement parts are claimed directly from the main factory plant in the USA.
Warranty Claim Process
Claims are submitted directly to the USA. Turnaround time: as quick as a few days if we have ready spares — most commonly worn parts are well-stocked. For uncommon parts, an indent order is required and may take up to 2 months.
Registration: All chairs are pre-registered for warranty before delivery. No further registration is required on your part.
Express Service: For casters (the easiest and most commonly damaged part), we offer a streamlined express warranty claim. For other parts, the chair must be returned for inspection.
To submit a warranty claim, please contact us with the following:
- Proof of purchase — receipt or order number.
- A photo of the fault with a description of the problem.
Note: The original serial sticker is kept under our safeguard so that after-sales service is easily managed and protected from loss or fraud.