Comosum Curation

Office Chairs

Ergonomic task chairs from Humanscale, active-sitting chairs from Varier, plus Case and Ethnicraft — seating built for long workdays.

Read our office chair guide →

A leather task chair at a black desk in a panelled study with shelving

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12 products

Ethnicraft Unda Office Chair in Charcoal at the Boomerang desk, styled in a home office, flat-weave upholstery
Ethnicraft
Unda Office Chair Sale price$1,099.00

2 colors available
Varier Ekstrem Lounge Chair in Bridge Orange, Norwegian ergonomic lounge designed by Terje Ekstrøm
Varier
Ekstrem Lounge Chair Sale price$4,999.00

8 colors available
Mater Eternity Swivel Chair in Coffee Waste Black styled in an interior setting, Matek shell on a recycled aluminum base
Mater
Eternity Swivel Chair Sale priceFrom $869.00

4 colors available
Humanscale Trea Chair styled in a workspace, B Corp climate-positive office design
Humanscale
Trea Task Chair Sale priceFrom $939.00
Save 23%
Humanscale World LM Chair styled in a workspace, B Corp climate-positive office design
Humanscale
World LM Task Chair Sale price$545.00 Regular price$705.00
Save 6%
Humanscale Path Task Chair styled in a workspace, recycled-content task seating, B Corp
Humanscale
Path Task Chair Sale priceFrom $1,277.00 Regular price$1,359.00
Save 3%
Humanscale Freedom Ocean Chair styled in a workspace, designed by Niels Diffrient, B Corp
Humanscale
Freedom Ocean Headrest Sale priceFrom $1,939.00 Regular price$2,009.00
Varier Thatsit kneeling chair, ergonomic Norwegian seating designed by Peter Opsvik
Varier
Thatsit Kneeling Chair Sale price$1,499.00

5 colors available
Case Furniture Ziba Chair
Case
Ziba Chair Sale priceFrom $795.00
Case Furniture Ella Swivel Chair shown in a styled setting
Case
Ella Swivel Chair Sale price$1,530.00
Varier Social Tilt Chair styled in a home interior, Norwegian ergonomic design by Snøhetta
Varier
Social Tilt Chair (Set of 2) Sale priceFrom $1,198.00 ($599.00 each)

6 colors available
Varier Social Turn Chair styled in a home interior, Norwegian ergonomic design by Snøhetta
Varier
Social Turn Chair (Set of 2) Sale price$1,758.00 ($879.00 each)

6 colors available

Common questions

What makes an office chair sustainable?

Evidence you can check on materials, manufacturing and repair. Humanscale uses up to 38% recycled content, runs TRUE Zero Waste plants and publishes verified life-cycle assessments. Varier publishes third-party-verified EPDs for most models, and its Social chairs contain 55–75% recycled plastic.

Are Humanscale office chairs eco-certified?

Humanscale has been a Certified B Corporation since 2024, and its Path task chair won a METROPOLIS Planet Positive Award in 2022. On Comosum's Sustainability Meter, Humanscale scores 30 of 30, a grade of 5.0 out of 5.

Do these office chairs come with a warranty?

Humanscale gives a 15-year warranty and Varier a 10-year warranty, and both sell spare parts, so a worn part can be replaced rather than the whole chair.

Which brands are in this collection?

Humanscale and Varier make most of it. Humanscale task chairs come from its own plants in the US and Mexico, and Varier chairs are designed in Norway and made in Poland. Case, Ethnicraft and Mater add a few more chairs.

Made to last chosen with intention.

Comosum's Ethos

Comosum is a US online retailer of sustainable, original-design furniture from more than 25 European and American design houses — Ethnicraft, Fermob, UMAGE, Heller, Anglepoise, FDB Møbler and Cane-line among them. We score every brand on our six-dimension Sustainability Meter before listing it, and ship across the contiguous 48 states.

We are curators, not a marketplace: no replicas, no unlicensed reissues, no fast furniture.

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