Military Backpack has 2 Main large compartments, 2 Small compartments in front, and 1 back compartment. The large compartment has an elastic strap to hold laptops or anything you don't want to move around. Each compartments has mesh pocket or zipper pocket to help with organization. Y-Strap on the top allows you to hold more items, like sleeping pad or sweatshirt. And it’s much more convenient to put your gadgets into the bottom side pockets,meet your Travel requirements.