In heraldic achievement, the mantling—or lambrequin—represents the protective textile covering suspended from the knight's helm. Historically, this fabric served the dual utilitarian purpose of shielding the wearer from the sun's heat and cushioning the cranium against concussive blows. In the codification of English armory, it is depicted as being hacked and tattered, a visual testament to the wearer’s prowess and survival in the crucible of hand-to-hand combat. From the Tudor period onwards, the depiction became increasingly stylized, evolving from simple functional folds into elaborate, foliated scrolls.
The tincture of the mantling is strictly governed by the Laws of Arms. In the English tradition, it typically follows the 'principal tinctures' of the shield, with the exterior being the primary color and the lining (doubling) being the primary metal. Sovereigns and certain peers, however, may adopt specific variations, such as the royal mantling of gold doubled with ermine. This decorative flourish serves not merely as aesthetic embellishment but as a symbol of the knightly status and feudal obligations inherent in the armigerous class.