A remarkable value, Sur La Table cookware is designed to exceed the expectations of both accomplished and novice cooks. Capitalizing on our familiarity with the world’s top cookware, we selected the best features for this distinctive double boiler insert. Top and bottom layers of gleaming stainless steel bond with a middle layer of pure aluminum, allowing for quick and even heat distribution. The stay-cool stainless steel handles, riveted securely to the insert, eliminate the worry of burning your hands. Limited lifetime warranty. Dishwasher safe.