Premium MaterialReusable, airtight, leak proof bento lunch box containers made of food grade BPA-FREE materials keep your meals fresh and mess free by preventing any spills leaks or smells in your bag. Leak-Proof And Easy StorageThe lid of the bento lunch box has a sealed silicone ring, you can open it to allow the food for heat dissipation and keeping food fresh. Reusable And Easy WashThe material of the lunch box is very easy to clean, no matter what kind of food, it can be kept very clean, easy for you to reuse. Easy To Open And CloseThere is an air valve in each tray and an elastic band for fixation. The upgraded design makes it much more convenient to open and close than other lunch boxes. Safe For Dishwasher, Microwave & FreezerIt can be used in dishwasher, microwave, freezer safely. And you can use it for work, school, picnic, camping, workout, etc.