"What Is It?" Reusable Red & White Gingham Checkered Picnic / Dinner Plate, 9 Inch Melamine, Set of 4 Includes a set of 4 plates Made of Melamine which is washable and reusable. Made to look like traditional white paper plates but they are not paper Dishwasher safe. Not microwaveable Measures: 9 inch diameter Available in other styles