中文Mushroom Leather Just Leveled Up — and Hermès Is Already Paying Attention
Let’s talk about the elephant in the room when it comes to “vegan leather.” For years, the alternatives have felt like… well, alternatives. You know the drill — looks okay in photos, feels wrong in your hands, and falls apart faster than a cheap umbrella.
MycoWorks just might have cracked that problem wide open with their latest announcement.
Reishi Gets a Serious Upgrade
Their flagship material, Reishi — grown from mycelium, the root structure of mushrooms — just posted some numbers that should make traditional leather producers sit up a little straighter. Third-party testing by CTC Groupe (the kind of lab that doesn’t hand out gold stars for effort) confirmed Reishi now hits luxury leather benchmarks across five key performance areas.
Let me translate those numbers into plain English, because they’re actually impressive:
The material survived 20,000 cycles of the Bally Flex test. That’s the test where they fold the material over and over and over again — think of the stress point where your favorite wallet bends, multiplied by about a decade of daily use.
It handled 25,600 cycles of the Martindale Abrasion Resistance test. This is the “what happens when stuff rubs against it” test. 25,600 rubs without failing is serious durability.
Colorfastness? Passed 200 dry rub cycles with zero dye transfer. Nobody wants a blue wallet that turns their white shirt into a Jackson Pollock painting.
And here’s the quiet killer — it passed an aging test at 50 degrees Celsius and 90 percent relative humidity. That’s basically simulating years of use in a tropical climate, compressed into lab time.
The Secret Sauce: Rei-Tanning
The breakthrough came from something they’re calling Rei-Tanning technology, developed through a collaboration between MycoWorks’ San Francisco innovation center and tannery experts in Igualada, Spain. Igualada, by the way, is a region with centuries of leather tanning tradition. These aren’t Silicon Valley kids guessing at what leather should feel like — they’re working with people whose grandfathers’ grandfathers tanned hides.
The Rei-Tanning process treats each Reishi sheet to achieve specific properties: fullness, softness, durability, water resistance. It’s what allows the material to handle “stitch-and-turn” construction — the kind of intricate technique used in luxury bags where the seams have to be absolutely perfect.
Hermès, General Motors, and Ligne Roset Walk Into a Bar…
This isn’t a hypothetical lab curiosity. MycoWorks counts Hermès, General Motors, and French furniture maker Ligne Roset as strategic partners. Ligne Roset ran their own tests on Reishi, pushing it through 50,000 Martindale cycles and a sitting simulation where a 100kg weight went through 25,000 cycles. Their furniture standards, by the way, are stricter than most fashion brand requirements.
The fact that all three — luxury fashion, automotive, and high-end furniture — are co-developing products tells you something. This material isn’t just for one niche application.
The Fine Mycelium Difference
What makes Reishi different from other mycelium materials is what MycoWorks calls Fine Mycelium technology. Instead of compressing mushroom material into sheets and hoping for the best, they engineer the mycelium to grow interwoven and interlocked at the cellular level. It’s the difference between pressing sawdust into a board versus growing a tree into the shape you need.
They’ve also just launched their first e-commerce site where customers can buy the material directly. For an industry that’s historically been opaque about sourcing, letting anyone browse and purchase is a statement of confidence.
Where This Is All Heading
Here’s what I find genuinely exciting: this isn’t about “replacing” leather. It’s about expanding what’s possible with materials. Designers now have an option that performs like luxury leather, comes from a completely different supply chain, and carries a completely different environmental story.
Is Reishi going to replace traditional leather overnight? Of course not. But when Hermès is a strategic partner — a company whose entire brand is built on the finest traditional leather craftsmanship — you know this isn’t just another “sustainable alternative” that’s going to disappear in two years.
The materials world just got a lot more interesting.
Source: Leather International — “MycoWorks enhances the performance of flagship biomaterial,” March 2025
