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The Tupperware Thermal Cooking Jar 1L is designed to keep food hot or cold for several hours, making it ideal for soups, porridge, oatmeal, rice, and packed lunches. It uses insulated stainless-steel construction to help maintain temperature and is portable for work, school, or travel. � Tupperware Plus Key features: Capacity: approximately 1 liter Double-wall insulated design Suitable for hot or cold foods Leak-resistant lid Reusable and portable for daily use � Tupperware Plus Tips for best heat retention: Fill the jar with hot water for 5–10 minutes before adding hot food. Empty the water, then immediately add freshly cooked food. Close the lid tightly to retain heat longer. �