Discover the stainless steel food cans. Completely sealed and insulated, this bento box is perfect for all occasions: in the office, picnics, hiking in . . . . Discover today's lunch box / thermos zojirushi water boiler Mister. The exterior of this bento box is stainless steel. This box contains four white plastic compartments, a pair of chopsticks and chopsticks in the case. This model of bento is very convenient, you can keep your food warm and you are not likely to reverse. Whether you're in the office, picnic or hiking, this lunch box is perfect to keep your sushi, maki, Japanese soup . . zojirushi (象印マホービン 株式会社) is a company founded in 1918 and specializes in the manufacture of rice cookers, bread machines, thermos, kettles and other utensils and kitchen appliances. Shop online sp.