【Premium Material & 3L Large Capacity】Our bento boxes are made of food-grade PP material which is BPA-free and non-toxic, high-quality safe for use. Great size with 3 layers, total 3000ml(101oz) for packing enough healthy food for adults and kids, not overly stuffed again. Suitable for family use, adults to work, kids to school, etc.【Multiple Layers Combinations】The bento box is stackable and can be freely combined as 1 or 2 or 3 layers use for different amounts of food. For a simple healthy meal, a single layer of 1000ml(33oz) is also sufficient and is lightweight and easy to carry. Each layer is separated by a sealer lid to better lock in freshness and preserve the original taste. Container-inside dimension for each layer: 7.28L x 4.45W x 1.97H inch (18.5L x 11.3W x 5H cm).【Microwave & Dishwasher & Freezer Safe】The lunch boxes are microwave safe to reheat food(without cover, 2-4 mins under 212℉). The boxes are easy to clean by hand or dishwasher (without cover so no scratches). Also, the boxes are freezer safe to keep food fresh(≧-4℉). All practical designs are for families' more convenient use.【Leak-proof Design & Durable Buckles】Each layer has a sealed lid and a special design groove for better sealing. The durable buckles on both sides can effectively prevent the leakage of liquids and food. No worry about the lunch overflowing or the lunch box splitting in your lunch bag causing all mess.