Tray with removable rack made of high-quality stainless steel. Reinforced encapsulated steel edge that prevents warping. High thermal conductivity: distributes heat evenly, providing optimal cooking results. Functional and versatile: With the rack, you can roast all kinds of meats, cool cookies, dehydrate fruits, etc. Without the rack, you can stew casseroles, roast all kinds of vegetables, and even bake your favorite cake. Suitable for oven, refrigerator, and freezer.