Come and see our amazing products.It is made of 304 stainless steel tray. It is the packaging material of health food. Food grade appearance provides us with health and safety. We focus on convenience materials, care about your child's health like you, and ensure that your child or yourself can use them safely every day. There is a rubber ring inside the stainless steel box cover, which has good sealing performance. It is suitable for students or office workers. It is suitable for use in the canteen. Pls confirm further with us if any query about packing info, inventory status and time schedule.