FAQs

FreyZein® is built for brands and manufacturers who want to add weather protection — wind resistance, water repellency, and breathability — to lightweight natural fabrics without changing how they look or feel. It's designed for applications where a natural aesthetic and handfeel matter as much as performance: lightweight outerwear, overshirts, trenchcoats, and other apparel where a stiff or plastic-feeling technical membrane would compromise the design.

Brands can start with FreyZein®'s qualified material library — a pre-vetted range of natural fabrics already optimized for FreyZein® technology — for the fastest path to a finished product. Brands that want to use their own fabric can instead work directly with FreyZein®'s team to develop a bespoke construction tailored to that material. Reach out via the contact page to start the conversation.

Textile mills, laminators, and garment manufacturers can license FreyZein® technology into existing lamination and manufacturing lines without new equipment. FreyZein®'s team provides membrane technology, application expertise, and guidance on compatible natural materials to make the transition straightforward.

Get in touch via the contact page to start a conversation with FreyZein®'s innovation team.

FreyZein® offers two platforms: FreyZein® S9, a windproof, water-resistant, and extremely breathable 2- or 3-layer construction for lightweight outerwear, overshirts, and trenchcoats; and FreyZein® SX, a next-generation waterproof membrane platform currently in development for brands seeking a bio-based alternative to synthetic waterproof laminates.

The core fiber and membrane structure of our S° Series is built entirely from cellulose. The only non-cellulosic component in the current construction is the thin bonding layer between layers.

Compared to conventional waterproof-breathable laminates — where the entire membrane, backing, and adhesive are typically petrochemical-based — FreyZein® replaces nearly all of that with cellulose, leaving only a small, actively shrinking share of synthetic material in the adhesive. Closing that final gap toward a fully biobased laminate is a current priority for our R&D team.

Yes. All FreyZein® platforms, including S9 and SX, are PFAS-free by design.

Yes. FreyZein® works with European research institutes, universities, and industry partners on active projects spanning bio-based textile functionalization, thermal insulation, and next-generation membrane technology — including collaborations funded through Horizon Europe, FFG, and the European Space Agency. If your organization works in materials science, technical textiles, or a related field and wants to explore a research partnership, get in touch via the contact page.