Tartan pattern is a type of fabric pattern that consists of criss-crossed horizontal and vertical bands in multiple colors. It is most commonly associated with Scotland, where it is known as PLAID. The three main types of tartan patterns are ARGYLE, PLAID, and sett. ARGYLE is a diamond-shaped pattern composed of different colored diamonds interspersed with lines of a single color. PLAID is a pattern of different colored stripes running both horizontally and vertically. Sett is a pattern of repeating squares of alternating colors.