Spiber, a pioneer in protein fibre, produced using cutting-edge fermentation technology, announced its successful partnership with Botto Giuseppe, a prestigious Italian premium mill renowned for its high-quality yarns made from natural fibers such as wool and cashmere.
Since beginning their collaboration in 2023, Spiber and Botto Giuseppe have been working to unlock the full potential of Spiber’s Brewed Protein fiber. “We are delighted to start this new collaboration with the development of such a high-tech fibre. It is a highlight in our sustainability journey,” said Silvio Botto Poala, CEO of Botto Giuseppe.
This partnership has resulted in the development of yarn blends containing 20%–50% Brewed Protein fiber combined with cashmere, as well as 100% Brewed Protein worsted yarn. Botto Giuseppe is the first European mill to successfully develop and market yarn made entirely from Brewed Protein fiber. These yarns are versatile, suitable for weaving and knitting, and can be used in a variety of applications such as shirts, suits and jersey knitwear. All yarns are now available for purchase through Botto Giuseppe.
At Pitti Filati, having took place in Florence, Italy, from January 28–30 2025, Spiber showcased a polo shirt made from 100% Brewed Protein yarn developed by Botto Giuseppe . This fabric exhibited an elegant touch endowed by the nature of Brewed Protein fibers and the manufacturers’ expertise.
Looking ahead, both Spiber and Botto Giuseppe are excited to explore finer yarn counts in 100% Brewed Protein fiber materials and collaborate on customizations tailored for specific brands.
