This Bultan seating is by Maximum, a French furniture brand whose raw material is industrial and municipal waste. This design started with crowd-control barriers (a/k/a Vauban barriers), specifically their design flaw.

"One damaged part, and everything gets thrown away!" the company writes. "Although designed to be robust, security barriers are put through tough conditions. Their feet are their Achilles' heel. Often crushed, they doom the entire frame to the dumpster, even when the rest remains intact.

"A few bends are all it takes to transform a Vauban barrier into the structure for Bultan."

For the seating surface, they offer two options. One is wooden slats, sourced from a manufacturer who works with pine, and who cannot use pieces with knots in their finished product. Maximum gladly takes them.

For their upholstered option, they source from a custom fabricator of foam and rubber products. On a daily basis, the company produces offcuts that they deem worthless; these become the cushioning for Bultan seats.

For the upholstery material, the company sources from Tesca, an automotive fabric manufacturer. "Winning over automotive manufacturers isn't easy, [and] many prototypes are rejected," Maximum explains. "Technically perfect, these hundreds of meters of fabric samples end up in the trash. These fabrics are used as covers for Bultan's cushions, giving them welcome industrial engineering qualities! Resistant to abrasion and fire, stain-proof—these textiles still have a lot going for them."

"Our furniture is made entirely from waste (apart from the screws). It's simple: making them is pollution cleanup. And it's guaranteed for 10 years! Our furniture comes from the trash and we don't want it going back. So they are designed to last as long as possible."

"From sourcing waste to the final production step, everything is done in France."

You can see more of Maximum's stuff here.