This product is not fully airtight. / Do not stand the product horizontally. / Wash with dish detergent before using the first time. / Do not use a scrub brush or polishing powder. / Do not use dishwashers, dish dryers. / Remove the lid and inner lid when heating in a microwave oven. / Can be used to warm ingredients in a microwave oven but do not use the product for cooking in a microwave oven. / Do not use over an open flame or in an oven. / Keep away from fire and other sources of heat. / Precautions for microwave use/ Read your microwave's instruction manual before use. / Do not heat empty. / Shorten the heating time for foods with low moisture content or for small amounts of food.