The bags are made of ECO leather, Renna material, which is an ecological material with imitation of leather. It looks like genuine leather. Its structure is out of 80% cotton and 20% polyurethane, that was ecological manufactured. Since the material is mostly made of cotton, it breathes. When you carry the bag every day, the material softens a little bit, because of the cotton base. But this does not change the the shape of the bag or the construction of the material. It is very good to form and iron, but at the same time it is easy to maintain as it is easily wiped with a wet cloth..     It is very good to form, ironing, but at the same time it is easy to maintain as it is easily wiped with a wet cloth.