The Stainless Steel Vacuum Insulated Tiffin Box is perfect for holding hot or cold meals, especially suited for places where refrigerators and microwaves may not be available. The outer body is constructed out of durable stainless steel and has excellent heat retention. 4 Non-microwaveable inner bowls including 3 soup bowls are ideal for holding curry and other soups. All containers are BPA free. Also includes an easy to carry tote bag.