Aluminum core between 2 stainless steel layers provides even heating for excellent browning and control of the cooking process Nonporous stainless steel cooking surface is safe for use with all utensils Elegant brushed stainless steel exterior can go from the oven or stove directly to the table Reflective cook surface makes it easy to monitor foods as they cook and remains beautiful over time Clear temperedglass lids let you see food while its cooking and are oven safe so you can finish covered dishes in the oven or keep them warm until ready to serve High sides and narrow opening minimize evaporation during slow process of stock and soupmaking Heavygauge sloped bottom heats evenly makes stirring easier Long brushed stainless steel handles stay cool on the stovetop All cookware is dishwashersafe and carries Calphalons full lifetime warranty Oven and broiler safe