Meet Mylo™

Made from mycelium — the complex latticework of underground fibers so strong they hold the planet together — Mylo is soft, supple, and less harmful to the environment.

The material that sparked a "mushroom leather" movement, Mylo™, is made possible by the world-class scientists and engineers at Bolt Threads.

Mylo products from adidas, lululemon, Stella McCartney, and more are on the way.

Why Unleather™?

Leather has served humans for centuries. But people evolve, and so should our materials.

In our resource-constrained world with a growing population, we are overdue for a renewable, sustainable alternative to leather. The time is now to embrace new frontiers of possibility and unleather the products we use every day.



The radical act of choosing products made sustainably with infinitely renewable mycelium over animal and synthetic-based materials.

Deep Science Meets High Design

Magical thinking meets radical intention. This is a mission that never compromises what's possible for what's easy or accepts the old way as the only way.

Enter the Mylo consortium — a group of world-class companies investing in meaningful material innovation.

Intentionally selected for their exceptional product quality, impactful global reach, and proven commitments to innovation and sustainability, these companies are coming together, across competitive lines, to help create a more sustainable future for fashion.

The Mylo consortium is adidas, Kering, lululemon, and Stella McCartney. Mylo products are on the way.


Stella McCartney has never settled for the status quo. A visionary whom Vogue once called “fashion’s conscience,” Stella redefines luxury by never using animal leather, skin, fur, or feathers in her collections. As one of the first designers to ever use Mylo in her studio, the pioneering designer has been instrumental in bringing Mylo to life.

I believe the Stella community should never have to compromise luxury and design for sustainability, and Mylo makes that a reality.

— Stella McCartney

The bustier top and utilitarian trousers were handcrafted from panels of Mylo laid on recycled nylon scuba at the brand’s atelier in London. Months later, Stella introduced The Frayme Mylo at Paris Fashion Week as part of her fungi-inspired Summer 2022 collection. The first handbag of its kind to walk a major fashion week runway, The Frayme Mylo promises to bring Stella fans a sustainable update to an already beloved style.


In April 2021, adidas debuted the Stan Smith Mylo™, the first-ever shoe made from Mylo. To showcase the future of material innovation, adidas chose to use Mylo in one of the most iconic sneakers of all time, the Stan Smith. This reimagined classic enables adidas to quickly scale Mylo through a globally beloved silhouette, paving the way for a better future while paying homage to their heritage. The outer upper, perforated 3 stripes, heel tab overlay, and premium branding are all made with Mylo, and the midsole of the shoe is made with natural rubber to unlock a more sustainable future.

This is larger than sports, this is for our future.

— adidas Annual Report 2020

More than a global leader in the sporting goods industry, adidas has been a longstanding pioneer in using eco-innovative materials to minimize its environmental impact. The brand has proven its commitment to sustainability through innovative partnerships and material exploration. As a consortium member, adidas has provided critical feedback in the development process to help give Mylo the strength and performance it demonstrates today.


In July 2021, lululemon revealed the world's first yoga accessory collection leveraging the high-quality feel and utility of Mylo. The capsule collection includes a concept yoga mat made entirely from undyed Mylo. The first product to use Mylo in an application beyond those traditionally occupied by animal or synthetic leather, the Mylo yoga mat experiments with varying, woven patterns to guide the placement of hands and feet during a yoga practice.

Leveraging a material like Mylo demonstrates our commitment to creating a healthier environment through lower-impact products…

— Sun Choe, lululemon Chief Product Officer

The collection also includes a Meditation and Yoga Mat Bag and Barrel Duffel Bag, which feature premium embellishments made from Mylo throughout, including intricately braided handles and zipper pulls. These inventive applications and construction techniques demonstrate lululemon’s continued innovation in sustainable product design and Mylo’s potential to reinvent products beyond fashion. The bags will be available for purchase in 2022.

Familiar Material, Radically Transformed

Mylo can be used like animal or synthetic leather, and can take on any color, emboss, or texture.

Substantial, supple, and soft. Mylo has an unmistakable resemblance to animal leather, but is designed to have a low environmental impact.

Concept Mylo™ yoga mat by lululemon, limited release Mylo Driver Bag (in black), and adidas Stan Smith Mylo

Concept Mylo™ yoga mat by lululemon, limited release Mylo Driver Bag (in black), and adidas Stan Smith Mylo

A community of visionaries and global supply chain partners – who share really good chemistry – have honed Mylo into a material that looks and feels just like leather.

Across fashion and sportswear, Mylo is now in the design studios of industry leaders with products dropping in 2022.

From the Earth, For the Future

For billions of years, mycelium has grown beneath our feet and served as an ecological connective tissue. A sprawling, infinitely renewable, interlaced web, it threads through soil, plant bodies, and along river beds to break down organic matter and provide nutrients to plants and trees.

Mushrooms are the fruit of mycelium. Much like the branches and vines that grow apples or grapes, mycelium functions like these twisting, branching supports just under the Earth's surface.

On a mission to harness the promise of advanced materials science, a team of visionary scientists and engineers at Bolt Threads have developed a state-of-the-art process to grow and transform mycelium into a​ high-quality alternative for animal and synthetic-based leather.

The process begins with mycelium cells grown on beds of sawdust and other organic material. Billions of cells grow to form an interconnected 3D network which is processed, tanned, and dyed to make Mylo.

All of the Leather, None of the Animal

Mylo consumes significantly less land and emits fewer greenhouse gases than raising livestock. The material is certified bio-based, which means it’s made predominantly from renewable ingredients found in nature. It is verified vegan through DNA testing and supply chain assessment, ensuring zero animal products are used from end to end.

The mycelium used to make Mylo is grown in less than two weeks using just mulch, air, and water in a vertical agriculture facility that is 100% powered by renewable energy. It is then harvested and processed into material form using Green Chemistry principles. This highly efficient process is rigorously designed to reduce environmental impact from start to finish.

Mylo supply chain partners all meet top sustainability certifications.


These statements are based on bio-based testing and certification by DIN CERTCO, vegan verification through the Eurofins Chem-MAP assessment program, and preliminary environmental impact calculations. A preliminary impact assessment indicates the incredible environmental benefits of mycelium-based leather. In 2022 a full LCA will be released to provide a deeper view into Mylo's impact. Read more about Mylo's impact measurement approach here.

UNLEARN the ways and materials of the past to begin a new future.

UNEARTH the magic of the natural world to create solutions as remarkable as they are renewable.

UNLEASH the power of advanced materials science.

UNLEATHER and join the journey where science and sustainability lead the way.