Grapes — From the vine to your feet

The world of winemaking generates millions of liters of wine every year... but also tons of waste. Skins, seeds, residue: a dense organic matter called grape marc. At Zèta, we don't see it as an end, but as a beginning.

A material born from an agricultural residue

Each pair in the Alpha collection is made with this innovative material, developed in Milan from recycled grape pomace. After vinification, the pomace is dehydrated and then ground into a powder. This powder is then mixed with a water-based PU to form a soft yet durable paste.

Spread over a recycled polyester fabric, this paste becomes the upper of our sneakers. A matte, stable surface with a slightly textured feel. Everything is cut and assembled by hand by our artisans.

A responsible material, without compromising on use

The final composition incorporates 55% grape and 45% water-based PU .

The lining is 100% recycled polyester .

But what matters as much as the recipe is the result: a material that's not only eco-friendly, but also durable. It's flexible, easy to maintain, and retains its shape over time.

Clear guarantees on quality

This material is certified by recognized independent organizations:

PETA, OEKO-TEX® STANDARD 100, GCA (Global Change Award), as well as ISO 14001 (environment), ISO 9001 (quality) and ISO 45001 (safety) standards.

These certifications support our requirement: to produce differently, but seriously.

Making sense, without making noise

Working with grape marc is a practical way of making use of what you already have.

This helps reduce dependence on new materials, while offering a technical and credible alternative to materials derived from petroleum or animal leather.

Agricultural waste, minimal processing, real use.

It's as simple as that.