Multi-clad stainless steel is very highly regarded for its properties as a cooking material. Heritage Steel 7-ply construction makes no compromises in design or materials, creating a best-in-class multi-clad product. No other type of cookware can offer all the benefits that come from using this type of cookware, and that is why it’s the only type of cookware that Hammer Stahl produces. It's the only type of cookware you'll need to buy. Heritage Steel by Hammer Stahl is proud to have a legacy of producing cookware in the United States since 1874.