The lunchboxes are made of high-quality food-safe polycarbonate with a steel interior. The lunchbox is sleek and compact, leak and spill proof, and allows you to carry curries and soups easily. The lunchbox is also dishwasher-safe. Easy to clean, soft cloth convenient lunch bag with zipper assures practicality and makes the lunch box easy to transport. Ideal for office executives and college students, these three unusual tight, spill-proof containers keep food and beverages fresh and crisp for hours. Stainless steel is significantly easier to clean than other materials and does not leave weird odours. We recommend hand washing the product to maintain its look and sealing effect.