Clad metal construction is the preferred fabrication by professional and home chefs alike. The interior layer of each pan is crafted of pure 18/10 stainless steel which is non-reactive and doesn't adversely affect the flavor of delicate ingredients or subtle sauces. The exterior is made of magnetized steel which is induction suitable and polished to a beautiful mirror finish. The key to clad cookware is the heat conductive metal core layered in between the stainless steel throughout the entire pan. BonJour's unique design offers better heat conduction than traditional clad cookware because its thicker base evenly directs the heat up the side walls and around the pan. The result is stunning cookware that heats up quickly and evenly and provides a lifetime of exceptional performance.