Vair is a type of fur used in heraldry, characterized by its distinctive blue and white pattern that resembles the fur of a squirrel. Traditionally, it was made from the pelts of the squirrel and was often used in the capes and garments of nobility. In heraldic designs, vair is depicted as alternating blue and white shapes, symbolizing nobility and status. In addition to its use in heraldry, vair has historical significance in medieval art and literature. It often appears in coats of arms and royal insignia, representing wealth and power. The term "vair" is derived from the Old French word "vair," which means "variegated" or "diverse," reflecting its unique appearance.