Herman Miller COSM Highback – Mineral | Adjustable Armrest

12 years warranty from 8 Solutions for the same length of time the manufacturer sets — parts, labour and return shipping for repairs included, and transferable to the next owner

Warranty issued and handled by 8 Solutions for the same length of time the manufacturer sets — parts, labour and return shipping for repairs included, transferable to the next owner. Repairs and parts at our showroom. The warranty runs from the day you receive your order.

This warranty is in addition to, and does not limit, your rights under Thai law.

Read the full warranty & service page

Bangkok & vicinity: free delivery by our own 8 Solutions team, assembly and a quick how-to-use walkthrough included

Other provinces: Thailand Post, ฿1,000 per chair, shipped fully assembled

In stock — leaves our shop within 48 hours (public holidays not counted)

Out of stock: 50% deposit · ships within 30 days of the deposit · The deposit is non-refundable if you cancel the pre-order yourself, except: (1) if we can't deliver within 30 days of your deposit, you can wait or get the deposit back in full; (2) for website or LINE orders, you keep your legal right to cancel within 7 days of delivery for a full refund

"Ships within 48 hours" is the time until we send it out from the shop, not the time it reaches you — outside Bangkok it travels by Thailand Post, which takes additional time.

Delivery outside Bangkok is charged per chair. Chairs are shipped fully assembled.

Not sure whether a model is in stock? Ask us on LINE any day.

Exchanges within 14 days · Online orders: cancel within 7 days of delivery ›

Ordered on our website or LINE: you can cancel within 7 days of receiving your order by messaging us on LINE or by email, and we refund the full amount within 15 days of your notice.

All purchases, including at the showroom: exchanges within 14 days.

If you're unsure about size or model before ordering, drop by the showroom (daily 08:00–17:00, closed on public holidays, no appointment) or send us your height and weight on LINE first.

To exchange an item, message us on LINE with your order number and the team will walk you through the steps.

0% installments up to 6 months with participating cards — message us on LINE for an installment link

via Beam

0% instalments for up to 6 months on participating credit cards — ask us whether your card qualifies.

Instalments are arranged in chat, not at the website checkout: message us on LINE with the model you like and we'll send you a payment link via Beam.

The monthly amount depends on the model and the number of months you choose; the team works it out with you in chat.

Get an installment link on LINE

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Genuine products, imported by 8 Solutions ourselves — not bought through a distributor in Thailand, which is why we issue and handle the warranty ourselves.

Warranty issued and handled by 8 Solutions for the same length of time the manufacturer sets — parts, labour and return shipping for repairs included, transferable to the next owner. Repairs and parts at our showroom.