Come and see our amazing products! It's amazing to have a hot food in hand when you're tired after a period of study or work,This lunch box is made of food grade stainless steel 18/10(316), which is corrosion-resistant and can hold all kinds of food and beverage soup. The double layers stainless steel construction make heat insulation effect very good, hot food can keep warm more than 8 hours even in cold winter. especially suitable for students who take meals to school and people who take meals to work. Pls confirm further with us if any query about packing info, inventory status and time schedule.