Portable Lunch Box Bag Student Simple Thickened Waterproof Bento Insulation Bag 1. It can be used in multiple occasions, keeps warm and fresh, and is portable for travel 2. Large storage capacity, high density and wear resistance, various styles 3. Long-term heat preservation, multiple freshness preservation, waterproof and antifouling 4. The aluminum film keeps fresh and is easy to clean, allowing you to enjoy delicious food anytime, anywhere 5. Reinforced handle, easy to take and take, no tightness 6. Smooth zipper design, smooth opening and closing, easy to carry to work and store 7. The outer material is made of waterproof material, which is moisture-proof and dust-proof, strong and not easy to wear, and durable for a long time 8. Material: Oxford cloth + aluminum foil 9. Function: heat preservation and cold preservation 10. Dimensions: 24.5 x 17 x 21cm 11. Weight: about 71g 12. Note: The product only includes the bag, nothing else