Trueware Steelex 3 Lunch box is made of double wall Polyurethane insulated Stainless Steel Containers. It helps to keep your meal hot and fresh for hours. Three durable Stainless Steel containers with Plastic (BPA free & FDA Approved ) Spill proof air vent cap. Air vent button on container lid helps in releasing air or steam for easy opening of container. This set is perfect for carrying all types of food items including curries, rice, chapatti, sabzi, etc. This Lunch Box comes with an integrated handle and carry belt which gives convenience to consumer for handling the product.