High-quality materials: three-layer protection, the inner lining is made of aluminum foil with cute patterns, heat retention and fresh seal, waterproof and anti-growth, easy to clean. Large capacity: various sizes to choose from, can hold your dishes, drinks, bento boxes or sandwiches. Small items such as mobile phones, napkins, keys, cosmetics, etc. can also be stored in the wild. Heat retention and freshness: three layers of heat retention materials, layer by layer to lock the temperature, reduce heat energy transfer in the bag, and keep you fresh for a long time. Humanized design: secure zipper design, easy to open and close, easy to store. Large opening, easy to carry. With a cute smiling face, bring your bag when travelling and feel comfortable anytime, anywhere. Note: small size: 2 x lunch box, a small amount of fruit, milk, a single tableware. Large size: can hold 3 lunch boxes, a small amount of fruit, milk, tableware for two people and dessert. (Recommended size of lunch box: length 22cm, width 12cm, height 20cm) The above reference data, depending on the actual size of the item you use may be less or more. Please choose the product according to the product size.