All-Clad Copper Core features a 5-ply construction that combines the superior heat conductivity of copper with the cleaning ease of 18/10 stainless steel. The five-ply construction consists of 18/10 stainless steel interior, copper core sandwiched by two layers of aluminum and magnetic stainless steel exterior. Copper is known to be the most superior heat conductive metals providing maximum temperature control. The unique layered construction of copper & aluminum allows rapid and even heat distribution during the cooking process. Other features include riveted stainless steel long handles that stay cool and rolled edges to prevent dripping when transferring contents. Each pan features a distinctive exposed copper band that adds design & elegance. The All-Clad Copper Core collection offers beauty and the ultimate culinary performance for the true connoisseur. 8" and 10" fry pans. 2-qt. and 3-qt. saucepans with lids. 3-qt. sauté pan with lid. 8-qt. stockpot with lid.