A woven pattern that exists of vertical and horizontal stripes that look like squares from a distant. Glen checks are the most commonly used for suits. Also known as ‘Prince of Wales check’ and it resembles a tartan, though it is primarily monochromatic. The windowpane check is a much bolder version where the checks are far apart, creating a checkerboard effect. The plaid is probably the best known patterned woolen cloth, but it does not have vertical and horizontal stripes.