The three-ply bonded design of All-Clad Stainless incorporates an aluminum center core clad with stainless steel to produce highly responsive conduction and even heat distribution. The magnetic stainless steel exterior is essential to ensuring compatibility with all induction cooktops, while also being ideally suited for use with traditional cooktop technologies. This 10-Piece Gourmet Cookware Set is a perfect combination of must-have kitchen basics. It includes an 8 inch fry pan, 10 inch fry pan, 2 quart sauce pan with lid, 3 quart sauce pan with lid, 3 quart saute pan with lid, and 8 quart stock pot with lid. All pieces are dishwasher safe and backed by a lifetime warranty. Made in the USA.