The D3 Stainless Steel Cookware Collection gets its name from its bonded, tri-ply construction. Two layers of durable, stainless steel are pressed together with a responsive aluminum core all the way around the surface of each stainless steel pot and pan. That way, heat is distributed evenly as you cook. This comprehensive cookware set includes a sauté pan, stockpot, and sauce pan with corresponding lids, plus a frying pan, so you can sear, sauté, simmer, stew, and more. Every piece is handmade in the USA at our Canonsburg, PA factory using ultra-durable stainless steel that’ll last a lifetime and never go out of style. As versatile as it is beautiful, you can use this high-quality stainless steel cookware on gas, electric, or induction ranges or even the oven or broiler. To keep your All-Clad looking brand new, we recommend washing your cookware with a soap and sponge instead of the dishwasher. Bonded, Engineered, & Assembled in USA. Backed by All-Clad's Limited Lifetime Warranty.