The first cookware to bring modern design into the home kitchen, Calphalon Contemporary Stainless delivers professional performance. This Calphalon double boiler is comprised of a heavy-gauge, full aluminum core encased between two layers of stainless steel for excellent heat conduction. Double riveted stainless steel handles stay comfortably cool. Lightweight, comfortable ergonomic design. Dome shape returns moisture to foods.Calphalon Contemporary Nonstick 2.5 Quart Double Boiler-Home