Lees in het Nederlands

As a future-oriented brand, sustainability is at the heart of our practice. We are very much aware of the environmental impact of our industry and commit ourselves to proving things can be done differently. A circular and transparent approach and continuous research regarding the next green solutions, are part of our daily scope. We work together with 2 production ateliers, located in Italy and Tunisia. You can have a look inside our factories here:

Our production atelier in Italy:

Our production atelier in Tunesia:


Hides are turned into leather through a tanning process. This has an environmental impact on three levels through the use of chemicals, water and energy. The tanneries we partner with use a closed-loop system in which water is reused, waste and chemicals are limited and energy used optimally. Our partners Rigato in Italy and Hoffmann in Germany respectively hold a silver and golden certification from The Leather Working Group, a not-for-profit that carries out transparent eco-audits and gradually raises its standards. It continuously urges tanneries to keep improving the quality and impact of their production process.


At Lies Mertens we share the drive of our tanneries to gradually reduce our environmental impact. We are very much aware of the impact on both the environment and climate of our animal products and we are convinced of the need to reduce this. This is why we are researching vegan raw material options for our products. Synthetic leathers are often manufactured from petroleum derivatives such as PU or PVC. They have a large ecological impact, and are thus not a proper alternative for us. Therefore, we are carefully looking into new developments around natural alternatives for leather. By focusing on these innovations, we try to support this young sector and to contribute to a sustainable future. We have a capsule collection in VEGEA at the moment and are working on something new and very exciting, launching 2023.


To minimize the impact of transport we keep our chain as short as possible. We only work with certified European leather tanneries that source the majority of their skins in Europe. Keeping this chain as short as possible doesn’t only lead to a lower eco-impact but also stimulates the crafts industry and employment.

About the brand

Our material choices

Care & repair