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Compound Dining Chair 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
Compound Dining Chair
Est. 2006 · Copenhagen
Shipping: $54 flat · FREE on orders $1,500+
✓ 30-Day Returns · ✓ Warranty Included · Questions? Chat with a design specialist →

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
Compound Dining Chair
OEO Studio drew this stacking dining chair for Mater, and each one locks up 4,330 grams of waste material.
The seat and back are Matek, Mater's patented composite that binds recycled fiber waste, coffee shells or wood waste, with recycled plastic. The shell is press-molded onto a frame of 20 percent recycled steel in a matte black powder coat. Mater, the Copenhagen design house founded in 2006, presses its Matek in a hydropower-run facility and builds this chair in Latvia for private and public rooms alike. It is the workhorse dining chair of our Mater collection, and it stacks eight high when you want the floor back.
Materials
Matek composite seat and back (coffee-shell or wood waste bound with recycled plastic); 20% recycled steel frame, matte black powder coat
Dimensions
19.7 in W x 19.7 in D x 33.1 in H; seat height 17.3 in; seat depth 16.5 in
Small-space fit
19.7 in wide and 19.7 in deep; stacks eight high.
Seat Height
17.3 in (44 cm)
Back Height
33.1 in from the floor to the top of the backrest (15.8 in above the seat)
Designer
OEO Studio
Made in
Latvia
Colors
Coffee Waste Light; Coffee Waste Dark; Coffee Waste Black; Wood Waste Grey
Care
Wipe with a soft cloth wrung in lukewarm water; avoid abrasive cleaners and sharp objects
Common Questions
Is the Compound Dining Chair stackable?
Yes. Mater rates it for stacks of up to eight chairs without upholstery and four with upholstery, so spare seating for a dinner party stores in a closet corner rather than a spare room.
Is Matek durable enough for daily dining?
Yes. The press-molded shell sits on a welded frame of 20 percent recycled steel, and Mater rates the chair for public as well as private use, which means cafe-level daily wear.
What gives each color its tone?
The waste stream does. Coffee-shell blends read warm brown through near-black; wood waste reads gray. Slight variation in fleck and tone between chairs is natural to a recycled composite.
Shipping & Returns +
Country of Production +
Latvia
Dimensions +
Care Guide +
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
grade out of 5
Shipping and Returns
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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.

















