Glen plaid (short for Glen Urquhart plaid), also known as Glenurquhart check or Prince of Wales check, is a woollen fabric with a woven twill design of small and large checks.[1] It is usually made of black/grey and white, or with more muted colours, particularly with two dark and two light stripes alternating with four dark and four light stripes, which creates a crossing pattern of irregular checks.[2] Glen plaid as a woven pattern may be extended to cotton shirting and other non-woollen fabrics.