Exceptionally even heating ensures optimum cooking performance. The Calphalon AccuCore Stainless Steel 10-pc. Cookware Set features pots and pans made from 5 layers of metal, including a responsive copper core that heats _ and cools _ evenly to help maintain a more consistent temperature across the entire pan. Copper core is surrounded by two inner layers of aluminum, while stainless steel outer layers create a beautiful, durable surface that is dishwasher safe. Stainless steel is an exceptionally versatile cooking surface, and is the best choice for high-temperature techniques such as searing and deglazing. Pots and pans set includes tempered glass covers.