Baking Mat and Pan Set - includes 2 Kitchen Quest Silicone Baking Mats and 1 Aluminum Pan 12 x 17In Half Sheet This silicone baking set bundle includes 1x aluminum half sheet pan and 2x silicone mats 12 x 17 Baking Sheet is a half-sheet pan that holds our silicone mat perfectly It is safe to use the mats in an oven, microwave, and freezer. They can withstand temperatures between -40 and 446 degrees Fahrenheit or 230 degrees Celsius. NON-STICK & EASY-TO-CLEAN: No more scrubbing! Just rinse the mat in warm soapy water to clean it. You can also wash it in your dishwasher. Repeated multiple uses and washing cycles do not affect non-stick properties of the mat.