Reviewed for sustainabilityComosum Meter · Mater 3.8 / 5Show the six category scores

Earth Stool is made by Mater. We review every brand we carry against published evidence in six categories; Mater scores 3.8 out of 5 (23 of 30).

  • Material 5 out of 5FSC wood, waste-based Matek; Wallpaper* 2019
  • Transportation 4 out of 5Mostly made in Latvia, Slovenia, Denmark
  • Manufacturing 4 out of 5EU partners; Bo Bedre sustainability award
  • Labor 4 out of 5EU partners bound by supplier code
  • Energy 3 out of 5No energy data published
  • Durability 3 out of 533 spare parts (EU); 2-year legal warranty
Brand-level score · Rubric v2.2 · Reviewed September 2026How we score

Earth Stool

Est. 2006 · Copenhagen

Sale price$519.00

Shipping: $54 flat · FREE on orders $1,500+

✓ 30-Day Returns · ✓ Warranty Included · Questions? Chat with a design specialist →

Color: Recycled Coffee Dark

Color

Size: Standard

Size

✓ In Stock — Ships in 1–2 weeks

The maker · Est. 2006 · Copenhagen, Denmark

Mater

A Copenhagen design house working with reclaimed and recycled materials

Mater has worked with designers in Copenhagen since 2006, using materials such as FSC-certified wood, recycled plastic, upcycled coffee waste and reclaimed mango wood.

  • Reclaimed and recycled materials
  • Copenhagen design since 2006

Earth Stool

Danish architect Eva Harlou press-molds this bar stool's seat from coffee-shell waste supplied by the roaster BKI.

The waste-to-value technique behind it was developed with the Danish Technological Institute and supported by the University of Copenhagen: coffee shells and recycled post-consumer plastic are blended into a compound Mater calls Matek, then press-molded into a smooth, pebble-textured seat. That seat sits on a gun-metal powder-coated steel frame, so the stool reads as one continuous circular line. It is the most literal expression of the circular thinking running through our Mater collection, and it comes in two heights.

Materials

Matek composite seat: coffee-shell waste from BKI coffee bound with recycled post-consumer plastic; steel frame with gun-metal powder coating

Dimensions

14.5 in W x 10.6 in D; 27.2 in high for counters or 29.1 in high for bars

Designer

Eva Harlou

Made in

Denmark

Colors

Recycled Coffee Dark

Care

Wipe the Matek seat and the powder-coated frame with a damp cloth; avoid abrasive cleaners, solvents and prolonged direct sun

Common Questions

Which Earth Stool height fits my counter?
The 27.2-inch stool suits kitchen counters around 36 inches; the 29.1-inch version fits bar counters of 40 inches and up. Allow roughly 10 inches between the seat and the counter underside.

What exactly is Matek?
Matek is Mater's own composite. Coffee shells from BKI coffee and recycled post-consumer plastic waste are blended into a compound suitable for press molding, a process Mater developed with the Danish Technological Institute.

Is the coffee-waste seat durable?
Yes. The seat is press-molded Matek rather than a coating or a veneer, so the material runs all the way through, and it is bolted to a powder-coated steel frame built for cafe and bar use.

Shipping & Returns +

In Stock Items Ship Within 7-10 Business Days * We will contact you to confirm any extended lead times for out of stock or backorder items

Country of Production +

Denmark

Dimensions +

Width: 14.6"
Depth: 10.6"
Height: 27.2"
Seat Height: 27.2"
Seat Depth: 10.6"

Care Guide +

To maintain the finish quality of your Mater product, please follow the care and cleaning procedures provided. Dust regularly with a soft, dry cloth. For wood surfaces, use a damp cloth with mild soap and dry immediately. For recycled composite surfaces, wipe with a damp cloth. Avoid harsh chemicals, abrasive cleaners, and prolonged sun exposure. Re-oil wood products periodically as needed.

Mater Sustainability Meter

Reviewed for sustainability by Comosum: Mater scores 3.8 out of 5 (23 of 30) across six categories, from published evidence.

  • MaterialFSC wood, waste-based Matek; Wallpaper* 20195 out of 5
  • TransportationMostly made in Latvia, Slovenia, Denmark4 out of 5
  • ManufacturingEU partners; Bo Bedre sustainability award4 out of 5
  • LaborEU partners bound by supplier code4 out of 5
  • EnergyNo energy data published3 out of 5
  • Durability33 spare parts (EU); 2-year legal warranty3 out of 5
Total23 out of 30
3.8
Sustainability
grade out of 5
Brand-level score · Rubric v2.2 · Reviewed September 2026How we score

Shipping and Returns

Shop with confidence. Learn more about our shipping process, delivery estimates, and hassle-free return policy.

Shipping Info

Flat-rate shipping from $10 by order total — your exact rate is shown above, next to the price. Orders over $1,500 ship FREE, freight and duties included. White Glove delivery is available at checkout on orders over $1,000 — $250 up to $1,500, $150 above it.

Returns

30-day returns in unused, original condition. Start a return at hello@comosum.co — we'll coordinate it with you.

Warranty

Every piece carries its manufacturer's warranty — typically 2 years or longer. We handle all claims for you at hello@comosum.co.

The Comosum Standard

Free shipping

Free delivery on orders above $1500.

Customer service

Real help from real people here when you need us

Thoughtful Design, Honestly Made

We work with trusted makers who build quality pieces made to last.

Secure payment

Protected checkout with encrypted payment processing