Product features: 1. Heat preservation/ice preservation/fresh preservation: the internal circulation preservation system locks the temperature, has a constant temperature, and lives healthier. 2. Keep warm for 5 hours in winter: It takes about 4 hours for a bento at 80C to drop to 30C; in summer for 8 hours, it takes about 6 hours for the temperature to rise to 18C when used with ice packs. 3. Waterproof design: built-in aluminum foil, heat preservation and freshness preservation. 4. Uses: You can carry items needed for breakfast, lunch or picnic. 5. Features: Environmental protection, anti-breakage, heat preservation, freshness and coldness. 6 Space Structure: The rectangular main compartment can accommodate all bento boxes and other lunch boxes. Large mesh pockets on the sides provide room for snacks and drinks, while a separate zip pocket on the front holds napkins, utensils, fun lunch notes and more 7. Portable and Ergonomic Design: Carry in handbag or shoulder strap. It can be used as a shoulder bag or shoulder bag 8. Easy-to-wash fabric: Made of high-quality Oxford cloth, durable and easy to clean, waterproof fabric is lightweight and durable. The interior can be cleaned quickly with a damp cloth - Good after-sales service: If you have any other questions about our products, please feel free to contact us. We are happy to provide you with the best solution within 24 hours. -Product List: 1 * Portable fresh-keeping insulation bag