Capacity
The volume of the working chamber of the thermal bag. The
larger the volume, the more products can be loaded inside at a time. When choosing according to this parameter, it makes sense to select a model with a margin, because it is not recommended to load products too tightly — this adversely affects the quality of the device. On the other hand, note that the volumetric container and dimensions will have the appropriate ones.
External compartment
An additional compartment on the outside of the bag is designed for convenient storage of small items such as a phone, keys, cards, utensils, napkins, or cutlery. External compartments usually have a zipper, Velcro, or clasp, allowing you to quickly and safely access items without opening the main compartment, where food or drinks are stored. These pockets can be made from the same thermal insulation material as the main compartment or from a less insulating material, depending on the user's needs.
