We use full grain leather, which is the highest grade of leather. Scrapes, scars and marks are normal and not considered a defect of the products. Exposure to water and other liquids can unfortunately leave permanent stains. If your bag is exposed to liquid, we recommend dabbing a dry cloth to the affected area to absorb as much moisture as possible. Most customers prefer to allow the natural wear of the bag to form, however if you wish to condition the bag, we suggest you test a small area prior to conditioning the entire bag.