Calphalon Tri-Ply Stainless Steel combines the beauty of stainless steel with the superior performance of aluminum. Classically designed, this collection features a high-polished magnetic stainless steel exterior and satin finished interior with full aluminum core, for superb conductivity & even heat distribution. This collection is compatible to use on all cooktops including induction and oven/broiler safe. Each cooking vessel is complimented with a riveted stainless steel handle. The Tri-Ply Stainless collection will compliment all kitchen decors. Lifetime Warranty.