Generally, mantling is blazoned mantled x, doubled [lined] y; the cloth has two sides, one of a heraldic colour (the five principal colours being red, blue, green, black, or purple -- there are other very rare colours as well) and the other of a heraldic metal (white or yellow). (See tincture (heraldry) for more on these tinctures.) The mantling is usually in the main colours of the shield, or else in the livery colours that symbolize the entity bearing the arms, though there are exceptions, with occasional tinctures differing from these, or occasional examples in which the outside of the mantling is per pale of two colours,
even rarer examples of other divisions, and there is a perhaps unique example in which the lining of the mantling is per pale of the two metals or of the entire mantling being of a single tincture. For example, the Coat of Arms of Canada is mantled white and red, or argent doubled gules; furthermore, the current standard rendering of the Canadian arms has mantling in the shape of maple leaves. The arms of soverigns are a common exception. The arms of the United Kingdom and those of Emperor Akihito of Japan are both or, lined ermine, such a mantling often being held to be limited to soverigns.
Cyril Woods, Baron of Slane, has a mantling "tasselled Gold, and there are some other examples of tasselling.
In the early days of the development of the crest, before the torse (wreath), crest coronets and chapeaux were developed, the crest often "continued into the mantling" if this was feasible (the clothes worn by a demi- human figure, or the fur of the animal, for instance, allowing or encouraging this). This still holds true frequently in Germany.
There are rare examples where the mantling is blazoned to compliment the armiger's coat of arms, mimicking the ordinaries and charges on the escutcheon. When charges occur, they are usually displayed as a semy ,