Natural World stands for 100% respect for the environment! This is why the brand only uses ecological and biodegradable materials and even recycled cardboard for the boxes. In addition, Natural World holds several certifications such as "made in Green", "Ecological textile Manufacturing Certification" or "Respect for human rights". Hence you can buy the Vegan Bota with a clear conscience. The sturdy outsole and toe cap are made of rubber for high durability and comfort.