?[DURABLE MATERIAL] The exterior of the laptop bag with lunch compartment is made of Oxford cloth, which is waterproof, durable, lightweight and easy to clean. Size: 332249cm. ?[INSULATION COLD KEEPING FUNCTION] The insulation layer at the bottom of our backpack is lined with food-grade aluminum foil, which not only keeps your food fresh and warm, but also keeps your cold beverages cold for about 2-4 hours, which makes it easy to clean and store your food. ?[USB PORT AND HEADPHONE PORT DESIGN] With an external built-in USB charger and a built-in charging cable, this backpack makes it easier to charge your cell phone while walking. Please note that this backpack cannot power itself. The external headphone jack allows for easy use of headphones. ?[COMFORTABLE TO CARRY] Breathable mesh padded back design with padded shoulder straps and adjustable chest strap for superior comfort. Equipped with a luggage strap that allows you to secure it to your suitcase, helping to release shoulder pressure during prolonged use. ?[LARGE CAPACITY] Laptop bag features multiple compartments for storing your laptop, lunch, daily necessities and more. Travel backpack cooler bag is suitable for office, picnic, beach, travel, trip, outdoor and indoor. SKU: CLBPlease note: As we are international seller, our delivery time will take about 10 working days. Our logistics provider and delivery method is: New Zealand Post.