The co-products we use to make our sneakers ( corn , grapes , olives , coffee ) cannot be used in their raw state. They must be mixed with polyurethane which stiffens and strengthens the material to make it durable.

For the corn and olive models, this PU is bio-sourced, meaning it's produced without plastic and from renewable resources. For the others, the PU contains a small amount of plastic. For example, the faux leather in the Alpha model contains 75% grape pomace and 25% PU.

We work daily in R&D to reduce the concentration of plastic-based PU in our materials as much as possible. And, ultimately, eliminate it completely!