Calphalon's Premier cookware wraps a heat-responsive aluminum core with four layers of durable stainless steel. The result is a six-piece set of classic pans that resist warping, denting and staining so the mirror-polished surfaces stay stunning. Fitted with handles that stay cool on any type of stovetop, the skillets, lidded saute pan and lidded saucepan heat quickly and stand up to the oven, broiler and dishwasher. This beautifully resilient cookware set makes an excellent housewarming, graduation or wedding gift.Calphalon has been making high-quality cookware since 1968, when the company developed a new technology derived from the aerospace industry to create durable hard-anodized aluminum cookware.