Calphalon's Premier cookware wraps a heat-responsive aluminum core with four layers of durable stainless steel. The result is a classic stockpot that resists warping, denting and staining so the mirror-polished surface stays stunning. Fitted with handles that stay cool on any type of stovetop, the lidded pan boils quickly, simmers gently and stands up to the oven, broiler and dishwasher. Build a beautifully resilient cookware collection by pairing this versatile stockpot with the other Premier pieces.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.