Nordic Ware Prism Big Baking Sheet – 19.5″ x 13.625″, Natural Prism Bakeware has improved air flow for crisper chocolate chip cookies. The natural aluminum offers the best possible heat dispersion to create perfectly browned baked goods. The herringbone look is embossed into the cookie sheet and is more than just attractive. It adds strength and durability. This large size cookie sheet is scratch resistant and is easy to lift cookies off of the sheet. Nordic Ware is an American success story since 1946.