The D5 Cookware Collection is made using a patented 5-ply construction that takes your cooking to the next level. is made with our patented process that bonds 3 layers of stainless steel with 2 layers of aluminum. The additional layers distribute heat more evenly and slowly, eliminating hotspots and making every bite identically delicious. This comprehensive cookware set includes a 1.5 and 3-quart saucepan with lid for sauces, a versatile 3-quart Saute Pan, a large, do-it-all 8-quart stockpot; and an 8 qt stock pot. 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.