Hydefy has partnered with luxury designer Stella McCartney to introduce a new fungi-based textile called Fy, as an alternative to traditional leather. The material is derived from fungi discovered during NASA-backed research in Yellowstone National Park, combined with sugarcane waste through a proprietary fermentation process. This sustainable and durable material is being marketed for use in fashion, automotive, and interior industries, with a focus on customization and rapid prototyping.

Stella McCartney, known for her advocacy for animal-free and sustainable fashion, emphasized her commitment to exploring plant and fungi-based alternatives that do not harm animals or the environment. The partnership with Hydefy reflects her dedication to advancing sustainable practices in the fashion industry. The Stella Ryder handbag, made from the new material, is described as the designer's most advanced vegan bag yet, appealing to consumers looking for ethical and environmentally friendly fashion choices.

Hydefy's parent company, The Fynder Group, plans to expand the use of Fy beyond fashion, including applications in the furniture and automotive industries. The collaboration between Hydefy and Stella McCartney showcases how innovative materials can meet the high standards of the fashion industry while promoting sustainability and ethical practices. This partnership represents a step towards a more environmentally conscious future in the fashion industry.