In this Airsoft Manuals episode of Taiwan Gun, they show the ways the 8Fields Multi-purpose Expandable Backpack can be configured... "A multi-purpose expandable backpack in which, with the help of a zipper, we can increase the capacity of the main compartment from 12L to 24L. In the main compartment, there is a laptop compartment or a hydration bag that can be mounted with 2 hooks. In a small zippered pocket there is a flexible organizer that ensures the safe carrying of necessary items during airsoft games or camping trips, e.g. phones, GPS devices, magazines, or digital cameras. The carrying system in the backpack consists of length-adjustable suspenders with an anti-sweat distance mesh and a chest strap that distributes the weight evenly, with a quick-release clip. In addition, the backpack has a Velcro panel for patches or tags, 4 rows of MOLLE straps for expansion with complementary equipment in this system, and a set of mounting straps for a tactical vest."