Natural gut and synthetic casings that are used in the meat and dairy industry are especially used to ripen, cook, shape, store and make products such as sausage, bacon, ham, butter, cheese and similar edible. Natural and artificial examples can be permeable or impermeable, domestically or foreign produced and salted or air-dried. Artificial casings however can consists of fibers, collagen or plastic. There is a color and print alternative for the artificial ones.