• 100% vacuum-sealed, keeps hot food hot for up to 6h, cold food cold for up to 12h, stainless steel outer container, 18/10 double-walled steel, 1. 7l volume , internal containers dishwasher washable, microwavable (without lid), can be put in the refrigerator or freezer, durable impact resistant plastic bottom, convenient handle for easy transport, 5-year extended warranty