This is the large rucksack issued within the US Army. This ruck is a great, sturdy backpack for carrying everything you could need while out and about. The external frame is sturdy and can carry heavy loads safely. The large main compartment has a zipper divider for keeping bulky items organized. The divider turns the bottom section into a completely different compartment, accessible by a zipper on the outside. You can close the main compartment with a draw string and a large flap. The adjustable buckles ensure that everything stay tight and secured. Also, the sustainment pouches on the sides are great for keeping essential items easy to access. You can cinch down bulky loads by using the compression straps on the side.