Simply Calphalon Nonstick Bakeware, Cookie Sheet, 12-inch by 17-inch Oven safe to 450F Hand washing will help maintain optimal nonstick performance. Please hand wash using a liquid dishwashing detergent and a non-abrasive sponge. Do not use aerosol cooking sprays Beautiful, toffee-colored nonstick finish Durable nonstick finish provides easy release Dishwasher safe for easy cleanup, however, hand wash preferred