It keeps the contents at a fairly good temperature, but its quality is mediocre. We handle its zippers with care as it is certain that they will break if forced, while one of the side pockets has already come off within 10 days of average use. Also, it should be mentioned that it is divided horizontally into 2 compartments with 2 different zippers, and in essence, you cannot fully utilize its height as approximately 8-10 points belong to the first compartment, which can accommodate things horizontally (e.g. a sandwich), and the remaining height belongs to the second compartment, which, for example, cannot vertically fit a large water bottle.