- Material: Aluminum Foil. - Size: 7" (18x3.8cm/7.09x1.5inch) / 8" (20.1x3.9cm/7.91x1.54inch) / 9"(23x4.2cm/9.06x1.65inch) -Perfect for baking or reheating food in the oven as well as storing left over food in fridge or freezer. - Containers are stackable for easy storage and kitchen organization. - Bake and serve in the same container, ideal for any types of baked dishes, pasta, casseroles, appetizers, desserts, etc.