Announcing strategic partnership with Botto Giuseppe and the development of 100% Brewed Protein™ yarn for the first time in Europe

Spiber Inc. is pleased to announce its successful partnership with Botto Giuseppe e Figli S.p.A., a historic Italian textile mill renowned for its high-quality natural fiber yarns, including wool and cashmere.

Spiber and Botto , Since beginning their collaboration in 2023, 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.”

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, taking place in Florence, Italy, from January 28–30 2025, Spiber will showcase a polo shirt made from 100% Brewed Protein™ yarn developed by Botto Giuseppe.

This fabric exhibits an elegant touch endowed by the nature of Brewed Protein™ fibers and the manufacturers’ expertise.