We are offering finished leather
finished leather is leather that has surface treatment added. Finished one would not stain like unfinished leather. Finished leather can either have a clear coat finish applied or a pigment coating and then a clear coat finish - these are often called pigment coated leather. A simple test for finished or unfinished leather is to put a drop of moisture on the surface of the leather - if it soaks into the leather its unfinished, if the moisture sits on the surface you have a finished leather.