Tanning to our natural leather

Our goat hides are processed into leather at the Renz Tannery in Southern Germany. This family-owned business has operated since 1888 and has always specialised in vegetable tanning. 

Instead of using the environmentally harmful chemicals (aldehydes and chromium) that are common today, the tanning is carried out with plant extracts from different types of wood, bark, and tree fruits – all of which are renewable raw materials. Tannins, a substance stored by plants to protect them from predators, are the active agents in vegetable tanning. The concentration of tannins varies depending on the plant – as does the effect. This determines the characteristics of the finished leather.

Vegetable tanning is one of the world’s oldest tanning methods, established more than 5,000 years ago. Today, only about 10% of all leather is tanned using this process because mineral tanning is much more cost-effective. 

However, we see vegetable tanning is the only option. While it takes a little longer, the process is gentler and results in a more durable, refined leather. In our view, this is the right, sustainable choice! 

Our leather is open-pored, breathable, and gentle on the skin. This also makes it perfect for people with allergies. 

We make sure to preserve the leather in its purest form: Instead of covering up natural features, we celebrate the uniqueness of each piece. Small traces of nature remain visible, making each piece one of a kind. Over time, the leather develops a unique patina that continues to tell the story of the wearer.

Learn more about our manufactories.