C&A and Zalando have committed to producing their first styles with Altag, a fiber made from agricultural waste, as part of a Fashion for Good initiative designed to pool brand demand.

On Tuesday, Fashion for Good and fiber developer AltMat announced the retailers as the Altag Fiber Club’s first brand signatories. Zalando is participating through its private labels.

Since its June 2025 launch, the club has brought together resources and minimum order commitments to drive commercial uptake of the material. The model seeks to address a hurdle for alternative fibers: Brands want reliable supply before committing to purchases, while developers need orders to support expansion.

The announcement did not disclose order volumes, product launch dates or which Zalando labels would use the fiber.

“Next-gen materials will only deliver on their promise if they reach volume. That requires brands with the scale and conviction to commit early—and that is exactly what Zalando and C&A bring to the Altag Fiber Club,” said Katrin Ley, managing director of Fashion for Good. “This is the kind of partnership that changes the trajectory of an innovation”

AltMat describes Altag as a natural fiber made from agricultural residues from food, medicinal and nontextile crops. The club aims to address barriers to its adoption, including production scale, processing compatibility and cost competitiveness.

C&A and Zalando will also help shape the fiber’s development, providing technical requirements and input on manufacturing needs and consumer expectations.

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