pattern with leather shell

[he martial arts related meaning of Pattern see Tae Kwon Do and Kata (Karate).A pattern is a form, template, or model (or, more abstractly, a set of rules) which can be used to make or to generate things or parts of a thing, especially if the things that are generated have enough in common for the underlying pattern to be inferred or discerned, in which case the things are said to exhibit the pattern. Pattern matching is the act of checking for the presence of the constituents of a pattern. The detection of underlying patterns is called pattern recognition. See more at Wikipedia.org...]

[her is a material created through the tanning of hides, pelts and skins of animals, primarily cows. Leather was a very important clothing material, and its other uses were legion. Together with wood, leather formed the basis of much ancient technology. Leather with the fur still attached is simply called fur. See more at Wikipedia.org...]