Corningware French White 4-Piece Round Mini Value Pack, Includes 2-1/2-Quart Round Dish Glass and plastic lids make cooking, serving, and storing easy and convenient Durable stoneware material designed for use in oven, microwave, refrigerator, and freezer Non-porous surface does not absorb food odors, flavors, or stains Dishwasher safe Oven, microwave, refrigerator/freezer, dishwasher safe