All El Greco shoes are made from genuine vegetable dyed leather. The vegetable dyes do not contain chromium and other chemicals harmful to health and the environment, they last over time and gives the product a more natural effect. These sandals are super comfortable and their anatomical sole, which, before being covered with leather, is covered with memory foam , an innovative material that works according to body temperature, gradually recedes and adapts perfectly to the natural curve of the sole, making the shoe very soft and comfortable.