The Calphalon AcCuCore 4qt. Chefs Pan with Cover features deep, rounded sides that make it easier to move food around inside the pan, which encourages the reduction of liquids and allows air to be incorporated into the food or butter with a whisk. This pan has five metal layers with a copper core that provides even heating, a long handle that stays cool on the stovetop, and it"s dishwasher-, oven-, and broiler-safe. For superior temperature control, consider this pan. About Calphalon Calphalon"s mission is to be the culinary authority in kitchenwares, enhancing the home chef"s food experience during planning, prep, cooking, baking, and serving. Based in Toledo, Ohio, Calphalon is a leading manufacturer of professional quality cookware, cutlery, bakeware, and kitchen accessories for the home chef. Calphalon is a Newell-Rubbermaid company. Calphalon"s goal is to give you, the home chef, all the tools you need to realize your highest potential in the kitchen. From your holiday roasting pan to your everyday fry pan, count on Calphalon to be your culinary partner - day in and day out, for breakfast, lunch, and dinner for a lifetime. 5 metal layers with copper core provides even heating. Features long handles and tempered glass lid. Dishwasher-, oven-, and broiler-safe. Manufacturer provides limited lifetime warranty. Holds up to 4 quarts.