Calphalon One Infused 4.5 Quart Sauce Pan W/lid 4-1/2-quart saucepan with stainless lid combines technologies for unparalleled cooking. Four interlocking layers on interior; advanced release polymer to prevent staining on exterior. For gas, electric, ceramic stovetops; safe for use with nylon, plastic, and wood utensils. and-washing recommended; oven-safe to 500 degrees F; lifetime warranty; made in USA.