DESC: All-Clad Gourmet Ovenware is designed to the same exacting standards that give All-Clad Cookware its quality performance and durability. The bonded tri-ply construction delivers even heat distribution, and will maintain its precise shape throughout a lifetime of service. All-Clad's tri-ply construction ensures that the sheet will not warp in a hot oven. The shape of this baking sheet makes it easy to slide cookies and other treats smoothly onto cooking racks.