Oxford[Premium lining & zipper] The lining of the lunch bag is made of PEVA aluminum foil, which is not easy to melt when the bag is hot. At the same time, it uses high-quality zippers to minimize the possibility of zipper damage.[Long-term heat preservation] The lunch bag is made of heat preservation materials, which can keep food and beverages cool or keep warm for more than 5 hours. In addition, the inner lining is made of food-grade PEVA aluminum foil, so you can put food directly into the bag. Built-in 6mm EPE foam provides great protection for your containers, food and beverages.[Wide opening design] The top of the lunch bag is designed with a strong zipper, which can be opened up to 11.8"x9.1", that is, you can put the lunch container into the bag and take it out horizontally. The wide opening design is easy to access, can prevent the liquid from leaking out of the container and soiling the bag, thus saving your cleaning time.Large capacity: 11.8 inches (length) x 9.1 inches (width) x 9.1 inches (height), with a maximum capacity of 15 liters, enough space for 24 cans of coke (330 ml), or your lunch, such as sandwiches, salads, snacks, Drinks, fruits, etc.[Durable & durable] The outside of the lunch bag is made of 600D waterproof and dustproof Oxford cloth, which is durable, waterproof and easy to clean. The sturdy linen handle and heavy-duty nylon are connected by dense stitching, making the bag very durable and can carry your lunch.