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Eternity Side 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 sold; 2-year warranty
Eternity Side Chair
Shipping: $36 flat · FREE on orders $1,500+
✓ 30-Day Returns · ✓ Warranty Included · Questions? Ask a design specialist →

Eternity Side Chair
Space Copenhagen shaped this stacking chair from post-consumer e-waste plastic and reclaimed fiber, about 4,330 grams of waste per chair.
The shell is Matek, Mater's patented composite, which recycles fiber waste, coffee shells or wood depending on the colorway, together with recycled plastic from post-consumer e-waste. A frame of 20 percent recycled steel in gunmetal keeps it light enough to stack and sturdy enough for restaurant service. Mater, the Copenhagen design house founded in 2006, makes it in Latvia from Matek pressed in a hydropower-run facility. It is the chair most people start with in our Mater collection.
Materials
Matek shell (post-consumer e-waste plastic with coffee-shell or wood fiber waste); 20% recycled steel frame, gunmetal powder coat
Dimensions
Width: 21.1"; Depth: 21.7"; Height: 34.4"; Seat Height: 18.1"; Seat Depth: 16.9"
Seat Height
18.1 in
Back Height
34.4 in from the floor to the top of the backrest (16.3 in above the seat)
Designer
Space Copenhagen
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 Eternity Sidechair durable enough for commercial use?
Yes. Mater rates it for private and public use, and the molded Matek shell on a powder-coated steel frame is built for high-traffic dining rooms and cafes where chairs get moved all day.
Do Eternity chairs stack?
Yes. The sidechair is a stacking chair, so spare seating stores compactly between dinners or events. The armchair and the stools in the series do not stack.
What gives each finish its color?
The waste stream itself. Coffee-shell blends read warm brown through near-black, while wood waste reads gray. Variation in fleck and pigment between chairs is natural to a recycled composite.
Mater +
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 sold; 2-year warranty3 out of 5
grade out of 5
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.
















