Full-grain leather indicates no artificial correction was applied to the hide in the tanning process. This is important because it preserves its natural integrity. As with any other skin type, the outermost layer is where the fiber density is highest. In full-grain leather this layer is kept intact which results in better adaptability, flexibility, breathability and resistance. Full-grain leather also has visible pores with a natural appearance. It's easier to care for as it absorbs conditioning creams. It doesn't crack or peel off and develops a unique patina as it ages. In short, it's the best leather type.