The Three Day Assault pack is a military surplus backpack that was designed for excursions lasting more than one day. It has a capacity of around of 1,850 cubic inches, which is enough room for the essentials.
The Three Day Assault pack has three compartments, large main compartment and an outer compartment. The outer compartment has a small storage pouch inside, and outside of it.
In the late 1990s and early 2000s, the United States military phased out the ALICE pack in favor of the MOLLE.