- Materials: 100% silk - Made in Italy - Dimensions: 11.5" x 11.5" - Officially Licensed with the University of California, Berkeley - Care Instructions: Dry Clean Only Would you like to honor your alma mater's proud history during life's most momentous occasions? This handsome Timeless Tartans pocket square gives your outfit an elegant finishing touch in a jacket breast pocket, perfect for a more formal look. Timeless Tartans' patented algorithm combines Cal's founding year and campus coordinates with its official colors to create a unique, meaningful tartan pattern you’ll cherish for years to come.