These are 9x13 Nordicware aluminum cake pans. The lids have a durable, baked-on enamel finish that is oven and dishwasher safe. Bottom is also oven and dishwasher safe. Product is made in the USA. All pans are silver aluminum and come with a colored lid. We have the following colors available: black, red, royal blue, dark green, orange, turquoise, dark pink and purple.