1. Square portable lunch box bento bag, long-lasting heat preservation and freshness, warm stomach and heart 2. The outer cationic Oxford cloth is waterproof and dirt-resistant, the pearl cotton lining is soft and shock-resistant, and the inner aluminum foil is long-lasting heat preservation 3. Three sizes to meet different needs 4. This reusable lunch box is suitable for attending live events, going to school, working, traveling, picnics, hiking, etc. 5. Metal zipper, two-way opening and closing, easy to use 6. With a durable handle and equipped with a shoulder strap, it provides two ways of carrying: shoulder bag or handbag. 7. Size: small size 24 x 14 x 17cm, medium size 26 x 17 x 18cm, large size 29 x 20 x 22cm 8. Weight: 0.18kg/0.22kg/0.26kg