Superior quality and design go into this beautiful Demeyere cookware set by John Pawson. 18/10 stainless steel exterior surfaces sandwiched with interior of heat conducting aluminum for even heat distribution. Bottom is made of 7 layers including inside layer of 2 mm thick solid copper. The stainless steel lids are a perfect match for the cooking pots, they provide a hermetic seal and save energy. Solid stainless steel handles stay cool even after hours of cooking. A specially designed edge to the pots was designed as a NO SPILL edge for clean pouring. This cookware set is made for all kinds of cooking including gas, electric, ceramic and induction. Pawson Cookware may be safely used in the oven up to 650 degrees Fahrenheit. 30 year guarantee against manufacturing defects, 10 years for professional cooking. Made in Belgium.