The Corelle by Corning English Breakfast Pattern Set of 3 Coffee Mugs Tea Cups is a vintage, three-piece set of round, beige floral mugs made of vitrelle ceramic. With a capacity of 10 oz, these original Corelle mugs feature a cottage core style and glossy finish, perfect for all occasions. They are microwave safe and weigh 2 lbs, making them a stylish and practical addition to any kitchen or dining area.