I decided to buy this backpack to go with the one I currently use which is very roomy.
When I don't need too much equipment it's really ideal, quite comfortable (unfortunately it doesn't have a strap to attach it to the chest).
Let's start from the bottom: in the front area there is a pocket where you can put up to three lenses, while underneath a pocket contains the lining to use when it rains (nobody's stopping you from putting small items like SD cards etc.)
Above there is a compartment where I usually put my filters and cloths to clean the lenses, let's say that as a compartment it's not too big, but as shown in the image you can also fit a telephoto lens if you want.
On one side we find the compartment for the camera (only one) and immediately below a small pocket to insert other small items (SD cards, chargers, etc.)
On the opposite side we find a pocket as long as the backpack to insert documents or a small laptop, two bands to support the tripod and an elastic net that I always use for the tripod (when I don't use it I insert a bottle).
Overall a very good space-saving backpack that I use only and exclusively on one-day photography trips.

Recommended for those like me who have a lot of equipment and usually carry everything, with this backpack you will only carry the essentials!