Milton KS890 Zen Deluxe 3-Piece Insulated Keep Warm or Cold Food Server with Stainless Steel Insert Insulated with polyurethane foam to ensure hot or cold temperature retention Odorless, hygienic, durable and virtually unbreakable construction This set contains 2.5, 1.5 and 1 liter casseroles Keeps Food Hot/Cold For Hours Inner casing Stainless Steel