All-Clad's Copper Core cookware features bonded five-ply construction that combines the superior culinary performance of copper with the cleaning ease of stainless steel. This versatile 4-qt. pan combines the rounded sides of a French skillet with the height and wide surface area of a deep saute pan. Ideal for preparing pasta sauces and then tossing in the pasta before serving, it's also perfect for cooking family-sized stir-fries and risottos and one-pan meals like stews, chilies and oven-baked casseroles. Five-ply construction of securely bonded metals: a thick, extremely heat-responsive copper core sandwiched between two layers of highly conductive aluminum, with stainless-steel exterior and interiors. Copper core allows for the quickest heat-up time of any metal, maximum temperature control and rapid, even heat distribution. A ring of copper adds a finishing touch to the gleaming exterior. 18/10 stainless-steel interior won't react with foods and allows for easy cleanup. Magnetic stainless-steel exterior for durability and dishwasher-safe ease. Ideal for use on any type of cooktop, including induction. Flat lid locks in moisture. Improved stay-cool stick handle with finger guard for balance and control. Rim is shaped to allow for dripless pouring. Pan size etched on base for quick identification. Handcrafted in the USA.