PRODUCT SIZECapacity of stackable thermos for hot food barrel is 87 ounces and the capacity of 3 bento boxes 1890 ounces 2 1285 ounces 1 The bento box adopts a doublelayer structure with 304 stainless steel inside and food grade PP material outsideNote The body of the bucket has a capacity of 87 ounces but the actual usable capacity is 51 ounces Additionally for better insulation the lid fits very tightly If this bothers you please do not purchase it STAYS HOT OR COLDThe GOLDEN KEY tailless vacuum technology can maintain the temperature of cold and hot food to the maximum extentSoups stay hot for up to 6 hours and cold foods stay cold up to 8 hours For better effect please pour hot cold water in the storage jar to preheat or precool for 23mins before putting food in it HIGH QUALITTY MATERAILS AND DESIANThis vacuum container is free of BPA and PVC and the interior of the container is made of 304 stainless steel ensuring its reliability at all times for at least one year Each bento box lid is equipped with an air valve to ensure that you can easily open it The wide mouth design makes cleaning more convenient In order to extend its service life please try to use hand washing as much as possible WIDE RANGE OF APPLICATIONS This vacuum container is suitable for daily office dining party dining and can also be carried for travel picnics and outdoor dining Paired with insulation bags it makes carrying more convenient and can effectively extend the insulation and cooling time THOUGHTFUL SERVICEIf you find any quality issues after receiving the goods we will provide you with free return and exchange services If you have any questions during the subsequent use please contact us via email and our customer service personnel will reply to you within 24 hours