When I bought my device, I took a small bag so that I could take it everywhere easily and while protecting it. Then we buy lenses, cameras, lighting, batteries, etc.... And we realize that when we go out for a photo day, we carry a lot of equipment. This bag largely answers it. So it is rather large without being excessive for a backpack. The materials are of excellent quality and the seams without any defects. All the rear parts are rigid and the interior is felted. We have a main storage area in which we can easily put the camera, filters, lenses and flash with modular compartments. At the top, we have a large and rigid compartment in which we can add lamps or thick equipment. But you can also open the bottom of this compartment to open it to the compartment below to accommodate very large telephoto lenses or lighting bars. There are quite a few small pockets everywhere to hold batteries, SD cards, etc. On the back, there is space for storing a PC. And a side pocket with more small pockets. Finally, we have two storage spaces on the sides to put one or two water bottles (or a water bottle and a tripod). It is really comfortable to wear and you can attach the two straps together to put less strain on the shoulders. The part in contact with the back is padded and quilted. Personally, I find it extremely comfortable, I appreciate the multiple storage spaces and frankly there is room inside (I still have empty spaces). Not to mention that it has a truly excellent level of quality. This bag never leaves me