lunch cooler bag has an interesting folding mechanism. It folds down in its middle and you secure it using a strap that attached on the bag with the help of the hook and loop straps. This is an easy and efficient way to collapse the bag, and it will significantly reduce its dimensions. Easy to put it everywhere, like in your car, suitcase or bag. This cooler bag is made of a polyester fabric that’s anti-tearing and stain-resistant. Quite spacious, it is good enough for your 30 cans of drinks and even a wine bottle up to 750ml. The lining is food-grade and made from PEVA which is leakproof. The insulation compartment can keep your stuff cold/warm/fresh for hours. This cooler bag also comes with two front pockets for dry storage, they’re large enough to accommodate some utensils, small gadgets, and other items you would like to store when traveling with the bag. The strap is also adjustable, so you can make it longer or shorter than how it is to match your preference.