Ratel Mk2 Cordura backpack from the Helikon Tex brand, has a 25L capacity, more than enough capacity for daily use or even 1 or 2 day patrols.
It has a main compartment compatible with the use of camelback. Apart from the main pocket, it has two more. The lower one has an organizer to keep our belongings tidy.
Front and side MOLLE / PALS straps give you the ability to mount additional pouches, giving us extra capacity if needed. Velcro panel on the front allows for easy customization.
The hip belt is removable and helps to better distribute the weight. It also has an auxiliary belt at chest height.