The MOLLE Large Ruck has a capacity of 4000 cubic inches. The side sustainment pouches can hold 500 cubic inches each.
The rucksack's main body has a zippered internal load divider, and openings at the top and bottom ends, to allow a sleeping bag (or other gear) to be loaded and unloaded independently without the need for an external "sleeping bag carrier."
The top flap of the Large Ruck is a mesh pocket for small reference and information materials. It is secured with a hook and loop closure.
The Large Ruck has two large, removable Sustainment Pouches which attach to the side of the ruck using the same interlocking attachment system as the FLC pockets. These Sustainment Pouches each contain two D-rings on the sides, which allow them to be carried by a "General Purpose Sling" for alternate uses.
The Sustainment Pouches can also be added to the side of the smaller MOLLE Assault Pack to add 1000 cubic inches (2 x 500) to its capacity. All of the large pouches of the MOLLE system have D-rings on the sides to allow the item to be slung with a GP sling.
The MOLLE Rucksack has 5 major components:
Plastic Molded Frame, 1 each
Large Rucksack Body (fabric body), 1 each
Sustainment Pouch, 2 each
Moulded Waist Belt, 1 each
Shoulder Straps, 1 each
*E-Tool Case is an optional Accessory that is not part of the Complete Molle Rucksack.