Stainless Steel Vacuum Thermal Lunch Box Insulated Lunch Bag Food Warmer Soup Cup Thermos Containers Bento Lunch Box for Kids304 Stainless Steel Vacuum Thermal Lunch Box Insulated Lunch Bag Food Warmer Soup Cup Thermos Containers Bento Box for StudentsProduct name:304 handle insulated lunch boxSpecifications: single layer/double layerProduct material: food grade PP+304 stainless steel linerProduct capacity: double layer 680ml/single layer 510mlProduct color: dark green, dark blue, whiteFeature:1. The stainless steel liner is corrosion-resistant, durable and easy to clean2. The lunch box is a double-layer hollow design, heat insulation, anti-scalding and not hurting hands3. Built-in sealing ring can prevent the soup from overflowing4. Optional thermal insulation bag, easy to carry5. Humanized handle, stable material, anti-fall and strong bearing capacity6. External silicone air holes release internal air pressure7. The bottom adopts a concave-convex smooth design, which is stable and does not scratch the desktop8.4 hours long-lasting heat preservation