Good Thermal Insulation --- Insulated lunch containers can reduce heat loss and improve thermal insulation, keep your family meals warm, long term storage. Double Vacuum Design --- The hot food container adopts double vacuum internal design, stainless steel inside and outside, with excellent temperature control and long term durability. Stainless Steel Material --- 304 stainless steel lunch container adopts high density materials, double wall vacuum technology, reinforced stainless steel tank. Keep Food Hot --- The vacuum insulation food box keep food temperature and better taste, produce the best insulation effect, suitable for long term storage, simple and quick operation, save your time and energy. Easy to Wash --- The wide mouth makes the vacuum insulated food jar easy to fill and pour out, convenient to wash. The 304 stainless steel lunch box double walled lunch box can thermal insulation, suitable for work, travel, picnic and outdoor use.