Japanese biotech company Spiber Inc. is revolutionizing the textile industry with Brewed Protein™ fiber, an innovative biofabricated material made through fermentation. Spiber’s Brewed Protein™ material platform, inspired by nature’s diversity and circularity, aims to create novel solutions for sustainable well-being. Spiber uses precision fermentation to manufacture proteins at the molecular level, producing flexible materials that may be adapted to specific purposes. This innovative approach opens up new opportunities for sustainable and high-performance materials in a variety of industries, including textiles, food, and automobiles. Their fiber is completely recyclable and has properties similar to cashmere. The company wants to solve the 7 million tonnes of clothing waste produced in the EU each year by creating a complete circular economy model in the fashion industry.
This week (February 4-5), Spiber made its debut at the Milano Unica Italian textile trade show, showcasing more than 100 new fabrics made with its Brewed Protein fibers, which are made using a proprietary fermentation process. Japanese distributor Takisada-Nagoya showcased a selection of 20 recently created suiting fabrics for the luxury market, which came in blends of wool and polyester with 10–50% Brewed Protein.
“Brewed Protein fibre is highly appealing for its fine diameter, excellent compatibility with worsted fabrics and its ability to deliver an unparalleled sense of luxury and superior texture,” said Takisada-Nagoya menswear fabric manager Ryuichi Tanaka. “Suit fabrics made with it not only embody sustainability but also feature a unique sheen and luxurious feel, setting them apart from traditional materials like silk or cashmere.”
Several fashion brands, including Burberry, Pangaia, Woolrich, Ron Herman, The North Face, Goldwin, Doublet, and Yuima Nakazato have begun introducing Brewed Protein™ clothing in select markets.
The North Face has reimagined one of its most legendary pieces—the Mountain Jacket, first introduced in 1985—by incorporating Brewed Protein™ fibers, a cutting-edge bio-based material developed by Japanese biotech company Spiber Inc.
The revamped jacket retains the essence of the original, which has long been a staple for mountaineers and outdoor enthusiasts. It also features the Expedition System, a design first introduced in 1988 for high-altitude climbing, known for its adaptability in extreme conditions. By integrating Brewed Protein™ fibers into the outer shell, The North Face introduces a new level of sustainability and innovation to its lineup. This next-generation structural protein material, developed through a proprietary fermentation process, offers a unique balance of performance, durability, and eco-consciousness.
Burberry has also introduced a B Shield Wool Brewed Protein™ Cashmere Blend Scarf made in Italy with wool, cashmere, and Brewed Protein™ fiber. Burberry has incorporated Spiber’s Brewed Protein™ fiber into a B Shield Wool Cashmere Blend Scarf, maintaining its hallmark luxury, warmth, and durability. The fabric is jacquard-woven with a B shield motif inspired by the Equestrian Knight Design, and it is washed again for an ultra-soft finish and elevated nap.
Pangaia has also launched the world’s first biofabricated hoodie, crafted from Brewed Protein™ fiber. By partnering with Spiber, Pangaia took a major step toward sustainable, petroleum-free textiles, reinforcing its commitment to eco-friendly innovation.
As global fashion brands continue exploring sustainable alternatives, Brewed Protein™ fiber is emerging as a game-changer in the industry. With Spiber’s commitment to circularity and innovation, its biofabricated materials have the potential to reduce waste and reshape the future of textiles. As more brands experiment with Brewed Protein™, the fashion industry moves closer to a more sustainable and regenerative future.
