Skip to main content
BoF Logo

Agenda-setting intelligence, analysis and advice for the global fashion community.

Why Mushroom Leather (and Other New Materials) Are Struggling to Scale

Late last month, leading materials start-up Bolt threads said it had paused operations for its leather alternative Mylo. The company’s struggle to raise funds points to deeper challenges for the sector, writes Kenneth Pucker.
A model holds a black square of Mylo, a mushroom-based leather alternative made by Bolt Threads alongside images of samples of the material.
Bolt Threads' mushroom-based leather alternative Mylo attracted large sums from investors and the attention of big brands, but the company paused operations last month after struggle to attract fresh funding. (Bolt Threads via Instagram)
By
  • Ken Pucker

Introducing a new expert opinion column by ESG advisor and educator Kenneth P. Pucker on sustainability matters.

Please sign in to ensure you can read our agenda-setting intelligence, analysis and advice. Or get in touch at support@businessoffashion.com if you experience difficulties.

Further Reading

The Truth About ‘Vegan Leather’

Leather alternatives have been boosted as eco-innovation and dismissed as mere plastic, but the truth is more complicated than that and demands clearer marketing to avoid misleading consumers.

Would You Buy a Mushroom Handbag?

For the first time, brands including Stella McCartney, Balenciaga and Hermès are bringing products made of buzzy mushroom-based materials to market, a critical test for whether the next-generation fabrics could one day hit the mainstream.

The Start-Ups Fashion Is Still Willing to Bet On

A grim economic climate has tempered enthusiasm for risky investments, but fashion companies and executives like H&M, Kering and Stella McCartney still see opportunity in start-ups pursuing sustainability solutions.

© 2026 The Business of Fashion. All rights reserved. For more information read our Terms & Conditions

More from Sustainability
How fashion can do better for people and the planet.

Fashion Searches For a New Climate Solution

Coach-owner Tapestry’s new carbon-removal partnership and brands making fresh commitments to textile-to-textile recycling startups show an industry searching for ways to address its environmental impact.


view more
Latest News & Analysis
Unrivalled, world class journalism across fashion, luxury and beauty industries.
VIEW MORE
Agenda-setting intelligence, analysis and advice for the global fashion community.
CONNECT WITH US ON