[VERY INSULATING]: The cooler bag is made of four layers of insulated material, which can keep food and drinks cool or warm for more than 5 hours. The food-safe inner lining ensures that you can put your food directly into the bag. The built-in 6mm EPE foam provides excellent protection for your containers, food and beverages. And you can also use it for a picnic, put all frozen items in the cooler bag. [WIDE OPEN DESIGN]: The top of the cooler bag can be opened up to by a strong zipper, which means you can put your lunch box in and out of the bag horizontally. The wide open design is for easy access and can prevent liquids from leaking out and dirtying the bag, saving your cleaning time. [FOLDABLE]: The reusable shopping bags are foldable, they are easy to open and close, easy to fill. The other nice thing about them is that they can be folded into a flat shape when not in use, making them very easy to store. They are lightweight and portable after folding for carrying. Easy to clean, stand upright, easy to pack, fold flat. [LARGE CAPACITY]: 43 cm L * 30 cm W * 31 cm H. The maximum capacity is 40L, spacious enough to hold 64 cans of cola (330ml) or food such as sandwich, salad, snacks, drinks and fruits etc. The insulated bag have two zippers. Things will not fall out. Zippers are made of high quality metal for long term use. [DURABLE]: The thermo bag are made of stain resistant 600D fabric for durability. Strong canvas handles and durable nylon are connected by tight seams, which make the bag extremely durable. The quality is good and durable, easy to clean, reusable.