What’s so Souper? Boston Warehouse Souper Mugs are made of high quality stoneware, with a plastic lid that has a steam vent cover, freshness date dial, and a rubber gasket for an air-tight seal.MULTI-PURPOSE – Prep, cook, serve, and store all in one dish. A must have for weekly meal prepping!PRACTICAL – Perfect for breakfast, lunch or dinner or even appetizers. Think overnight oatmeal, power bowls, soups and stews, or leftovers from last night’s dinner.PREVENT FOOD WASTE – Use the unique date-dial to set when the meal or leftovers were stored. No more wondering how long that meatloaf has been lurking in the fridge.STYLE WILL VARY