Brilliant good looks. Perfect gourmet results. Combining the long-lasting radiance of stainless steel with the superior performance of a highly conductive, heavy-gauge aluminum core, the Calphalon Tri-Ply stir fry makes it easy to prepare mouthwatering meals day after day - each more memorable than the last. Lifetime warranty. Calphalon Tri-Ply Stainless Steel 12" Covered Stir Fry Home - Kitchen Kitchen - Cookware