Silicon Baking Mat. 16 5/8 x 11 Non-stick. Half Sheet Can be used in an oven up to 480 degrees Fits half size baking sheets 18" x 13" Flavors or odors will not penetrate the baking mats Eliminates the need for cooking sprays, oils, butter or parchment paper for a healthier option Easy to clean, just wash off with soap and water, rinse, shake off water and let air dry