We use high-quality and 100% genuine cow leather to craft our bags which features a natural variation of colors and scratches. The type of leather that we use is called Oil Pull Up which is known to be one of the most unique and durable leather among any others. This type of leather will lighten its color when bend or scratch. Just like our skin, our leather bags are meant to age and gain a natural patina* (*changes in colors, marks, scratches and fine lines) through time and daily use. This is the beauty of our leather bag, it grows different characters by different users with age.