Brewed Protein™ fiber is a revolutionary sustainable material developed by Spiber through microbial fermentation of plant-based sugars. This innovative protein polymer is engineered at the molecular level to mimic the properties of spider silk, offering high tensile strength, stretchability, and biodegradability.

The fibers produced can be spun into yarns or transformed into films, resins, and molded parts, making them versatile for use in a wide range of industries including apparel, automotive components, accessories, and personal care products. The production process of Brewed Protein™ fiber is designed to reduce petroleum dependency, minimize waste, and lower emissions, aligning with sustainable practices.

Major brands such as The North Face, sacai, Goldwin, Pangaia, and others have already incorporated Brewed Protein™ fiber into their products, showcasing its potential in the market. By supporting circular lifecycle goals, this material enables compostable and recyclable end-of-life scenarios, contributing to a more sustainable future.

Spiber not only licenses the material to manufacturers but also collaborates on product design to ensure seamless integration into commercial supply chains and scalable industrial implementation.

• High tensile strength and stretchability
• Biodegradability and sustainability
• Versatile applications in apparel, automotive, accessories, and personal care
• Reduction of petroleum dependency and lower emissions
• Support for circular lifecycle goals
• Collaboration with major brands for product integration