Demeyere Apollo casseroles feature an InductoSeal® base that combines silver and a 2mm disc of copper hermetically sealed in an 18/10 stainless steel TriplInduc® base that’s laser-welded to the pan. The combining of these two unique technologies ensures optimal heat distribution throughout the entire base, and provides a heat-conducting surface 33 percent larger than traditional pans. Heat, aroma and steam stay inside pan during cooking, as well. Also features satin-polish Silvinox® finish and stainless steel Coolcast® handles. Dishwasher safe. Made in Belgium. Thirty-year warranty.