These inlay but you have full flexibility when it already has a conventional backpack. Transport times a day traveling no Kameraqueiment in his pocket, no problem simply take out the inlay. Ne 1,5l water bottle is at normal size backpack no problem, and if not ... the inlay is flexible, you can hold an objective way (nei me went even purely with an additional lens, conventional day Deuter Backpack).
In addition to the DSLR camera and two lenses one still has a lot of space for memory cards, batteries and Co. Perfect size for travel, flexible, excellent workmanship, Excellently quality of the zipper.