Protected leather is more common and less expensive than pure aniline or semi-aniline leather products. It has been dyed and/or coated with protective pigments making its color more consistent and the leather’s natural markings less noticeable. Protected leather is more heavily pigmented than semi-aniline leather is, causing the finished surface to repel water and resist stains better, plus making it easier to clean

Semi-aniline leather describes a full grain leather, which contains only a small amount of surface dye or clear pigmented finish allowing most of the natural character of the leather to show through. This is a premium leather product that has used only a little pigment, whereas pure aniline leather uses none.

Pure aniline leather Only the best hides are good enough to be called pure aniline leather. It is considered the highest quality and most expensive leather.
It is made from full grain leather, that does not require grain correction, still having its natural markings intact. This leather may use a clear finish or protective coating, but not a finish that is pigmented. The appeal is in maintaing its natural characteristics

Suede is a kind of leather with a smooth, velvet-like feel. Suede is made from either the inner split or the flesh split of a piece of leather. Because it comes from a thinner piece of hide, suede is less durable than full-grain leather. The nappy texture of the material also makes it more susceptible to damage from water and stains.