Circular by Design

How Peak Performance rethought a down jacket together with its partners

If collectors and sorters determine whether used textiles become a resource at the start of the value chain, product design determines whether that resource is accessible at all. With the R&D Helium Loop Anorak, Peak Performance shows how Textile-to-Textile circularity starts in the design phase, not in the recycling process.

The challenge: a down jacket is, by definition, a multi-material product. Nylon shell fabric, membrane, lining, down insulation, seams each element comes with its own requirements for performance, durability, and comfort. This complexity has made recycling nearly impossible so far. “Responsibility is a central anchor for Peak Performance, from the outdoor experiences we enable to the materials we use,” says Aspar Karahyuseinov, R&D Product Specialist at Peak Performance. “Down and nylon are valuable high-performance resources. We wanted to find a way to use them again and again.”
But new processes rarely emerge in isolation. That’s why the brand deliberately chose cross-industry collaboration with ALLIED Feather + Down, Resortecs, NetPlus® and PERTEX. For designer Marie Andersson, the initial driver was creative: “Curiosity drives sustainable innovation. Different areas bring different expertise. Together, the impact is stronger.”

Circularity begins on the drawing board: What initially sounds like a material project was, above all, a design project. “It’s a completely different way of thinking,” Andersson explains. “You have to use materials more intelligently, add less, challenge constructions. Finding new functional solutions is highly creative work.” The entire development process was shaped by close dialogue. Materials were tested not only for performance, but also for how they can be separated at end of life. “We had to listen to the materials,” says Karahyuseinov. “It was about balancing style, function, and end-of-life disassembly. And you have to learn to be comfortable with uncertainty. When it gets complicated, you know: that’s where innovation potential lies.”

Down is not the problem: Interestingly, the down insulation itself was not the biggest hurdle. “The wonderful thing about down is that it has always been completely recyclable and compostable,” says Matthew Betcher, Creative Director at ALLIED Feather + Down. “We didn’t need to change our product.” The problem lies elsewhere: “Brands want circularity and recycling. But when we dismantle products, material fragments often remain that have no solution. Down is the easy part, the construction of the overall product is the real challenge.” This is exactly where the project started: circularity not as a reactive solution, but as a design starting point. “Our hope is that projects like this highlight the importance of ‘designing for circularity’ and show that it’s not enough to simply throw different elements together and expect circularity. Even if every individual component is potentially recyclable, that still doesn’t mean the product as a whole can actually be recycled.”

Nylon as a circular resource: NetPlus® nylon is used for shell and lining, yarn made from recycled fishing nets recovered from marine ecosystems and processed into post-consumer nylon 6. Woven by PERTEX, it becomes a high-performance fabric with a reduced environmental footprint. The key point: the material can be recycled again, provided it can be separated cleanly. But even when recycling technologies exist, the infrastructure question remains open. Collection, sorting, and clean material streams are prerequisites for scaling such concepts. “Our goal with the Helium Loop project was to build a proof of concept that can serve as inspiration for the apparel industry. With smart design, we can create products that are better suited for recycling at the end of their life. Outerwear can be especially challenging to recycle, so a focus of this project was on ease of disassembly. This jacket demonstrates that recycling infrastructure already exists for monomaterial constructions. The challenge is in the collection, sorting, and distribution of materials. While this aspect of the supply chain is still in its infancy, we have time to develop it further, since a product designed and built with high-quality inputs is expected to be worn for many years. The goal is for these solutions to be available when products like the Helium Loop Anorak have reached the end of their useful life. The current opportunity for insulated products is to incorporate circular design elements now that enable end-of-life recycling solutions down the road,” explains David Szover, Co-Founder at Bureo.

The seam as the key: The decisive technical lever lies in the detail: the seam. Resortecs developed Smart Stitch™, a heat-dissolvable thread that opens under controlled conditions. “Even with design choices that minimize components, separating down from the outer fabric remains complex,” explains Cédric Vanhoeck, CEO of Resortecs. “Our heat-activated sewing threads enable clean, efficient disassembly and recover more material at higher purity than would be possible without Smart Stitch.” The result: a multi-material product that can be dismantled into its components at end of life, an essential prerequisite for Textile-to-Textile recycling beyond monomaterials.

Proof of concept and what now? The Helium Loop Anorak is a proof of concept. The real question is: can this approach scale? “These are small steps toward industrial recycling of down apparel,” says Karahyuseinov. “This is a real pain point for the industry.” For Andersson, it is above all about mindset: “You have to be willing to think outside familiar processes. If we truly want recycling, we have to design for it and then scale it.” The anorak does not solve the infrastructure problem. It replaces neither collection systems nor sorting facilities nor regulatory frameworks. But it shows what becomes possible when design, material innovation, and technology are considered together from the start. And that closes the loop back to this season’s Focus Topic: circularity does not start at the recycler. It starts with the product. And it only works when the entire chain, from design to sorting, aligns.