Viking Professional 5-Ply Satin Cookware uses commercial quality construction to deliver professional performance in the home. With an elegant satin finish, this premium line of cookware is specially handcrafted in the USA. 5-ply construction maximizes heat transfer and reduces energy usage by leveraging the conductivity of an aluminum core sandwiched between stainless steel. This combination of materials enables Viking cookware to deliver superior cooking performance. Each layer of metal is carefully selected for optimum performance and efficiency - stainless steel for durability and aluminum for conductivity. The magnetic stainless steel exterior makes this cookware suitable for all stovetops, including induction. The core is made up of three layers of aluminum. Two layers of nearly pure 1050 aluminum bonded to a structural layer of 3004 aluminum that prevents warping. The aluminum core disperses heat quickly and evenly throughout the bottom and sides of the vessel. The non-reactive