Cowhide is durable, wipeable and has a low possibility of having scars/markings.
Lambskin is smoother than cowhide, is wipeable, and prone to having scars/markings.
Deerskin is very soft, rustic, NOT wipeable, WILL HAVE scars, and the coloring throughout the same hide is uneven.
If you'd like multiple colors, please let us know here which book and which leather you would like for each.