Nature, life, path:

VIOSĀ®: our in-house development platform

We already established our in-house development platform for sustainable materials, VIOSĀ®, in 2013. The word VIOS is a combination of the Greek word BIOS and the Latin words VIVO and VIA: nature, life, path. With VIOSĀ®, we are addressing the issue of sustainability comprehensively and on the basis of sound science. For this purpose, we have created our own standard, the VIOSĀ® Restricted Substance List: it covers 650 substances, applies considerably stricter threshold value requirements than those demanded by the law or quality seals and is constantly updated. When we develop our collections, we ensure that all leather linings meet the VIOSĀ® standard: the leathers are chrome-free tanned, have safe origins, are produced using eco-friendly manufacturing methods and guarantee a transparent supply chain. This is how we achieve our goal of maximising the use of sustainable materials for the production of shoes to protect people and nature.

ā€œA passion for shoes and respect for nature have always been at the heart of VIOSĀ®. Our goal is to manufacture particularly sustainable materials to holistically protect people and nature.ā€

ā€”Stefan Stolitzka
Owner and CEO of legero united


We have created our own standards for consistent sustainability.

With the VIOSĀ® Restricted Substance List. Leather that bears the VIOSĀ® name must be manufactured according to the latest research ā€“ chrome-free, and with environmentally friendly dyes and materials. Because itā€™s important to us to act in the most resource-conserving way possible.
For this reason, we work exclusively with partner companies and production facilities that are committed to the strict criteria of our VIOSĀ® Restricted Substance List. This sets higher standards than those required by regulatory authorities or quality certifications. And itā€™s constantly being developed further together with industrial partners and research institutes.


The interplay of our actions with people and the environment are continuously reviewed.

Our aim is to ensure that as much sustainable material as possible is used in the production of our shoes. Thatā€™s why we test our materials for all substances they contain and their impact on people and nature. Only then can they be used for our shoe production. The tests are conducted much more regularly and extensively than those of many other shoe manufacturers. And this in constant cooperation with recognised testing institutes.


Sustainability includes not only production, but also the way we achieve it.

We ensure that transport routes within the supply chain are as short as possible. After all, we want to keep our CO2 footprint as low as possible everywhere. And this path pays off. Recognition is proof of it. Thatā€™s why we are particularly pleased to have already received several awards for VIOSĀ®. We know that weā€™re on the right track with VIOSĀ®. And weā€™re taking it further. For people and nature, for today and for tomorrow.