The fixed internal arrangement of a photobag or photo bag means that the internal dividers and compartments that separate the equipment compartment are sewn or otherwise fixed to the structure. Thus, these compartments cannot be moved, removed or otherwise repositioned. The entire interior space is designed by the manufacturer for a specific set of photographic equipment, for example, one camera body with a lens attached, two additional lenses and a flash. The main advantage of this solution is that the equipment fits precisely into the prepared compartments, minimizing its movement inside the backpack and providing a high level of protection against impact. The user is also always sure of the location of which piece of equipment. Unlike systems with Velcro sliding dividers, referred to as "modular layout", here the space cannot be adapted to accommodate new or otherwise large equipment. This arrangement is therefore suitable for photographers who use a stable set of equipment and prefer perfect customization and protection over the possibility of future modifications to the interior space.