Hermès worked with California startup MycoWorks for three years to develop Sylvania, a vegan leather alternative grown from mushroom filaments rather than animal skin. The material was set to first appear on an eco-friendly version of the Victoria Travel bag alongside canvas and calfskin. It uses MycoWorks' patented Fine Mycelium technology, and leather experts endorsed it.
What is Sylvania?
Hermès will be using a vegan leather alternative, at least in its leather accessories. The house partnered with MycoWorks, a startup based in California, to develop a sustainable vegan leather made from mushrooms. The material goes by the name Sylvania, and it shows the new wave of biotech materials being developed for sustainable vegan leather. It was set to appear first on an eco-friendly version of the Victoria Travel bag, alongside materials such as canvas and calfskin.
How is mushroom leather made?
Sylvania took three years to develop, and it relies on MycoWorks' patented Fine Mycelium technology. The filaments in the mushroom emulate traditional leather, and the process creates an interlocking cellular structure, which gives the material its strength and durability. The result feels similar to cowskin, which matters most in a house whose reputation is built on hand feel and finish.
Where is it made and finished?
The material is made in California and shipped to France for the Hermès ateliers. Hermès teams tan and finish it before crafting their desired vegan leather goods, applying the same standard the house uses across its leather collection. That combination, a startup's material science plus Hermès finishing, is why leather experts have endorsed the project, and it is a template other houses are likely to study.
What does it signal for luxury?
Sylvania is a marker of where materials are heading: biotech alternatives that aim to match leather on performance rather than simply avoid it. For a house known for exotic and traditional skins, offering a mushroom based option in its accessories is a meaningful position, and it keeps the vegan conversation inside the luxury tent rather than outside it.
Explore authenticated Hermès bags, compare methods in the exotic leathers guide, and see how a true one-off performs on the market in the Himalayan Birkin story.
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