The item you have purchased has been made with leather that has undergone a mixed-vegetable tanning process. It is an unfinished, grainy leather to retain the natural appearance and features of this item. Any veining and irregularities in the colour are to be considered normal. The aged effect is hand-created on each individual shoe, so there may be slight differences between the pair. Do not expose the product to rain and excessive humidity. For cleaning, we recommend using a wool cloth or similar without adding self-polishing products or products that could discolour and oil the leather.