The Mercury Tactical Gear Tac Pac expands to a full 68L of packing space so that you can pack the gear you need on your next outdoor adventure or tactical deployment. This rugged 72-hour pack features a range of storage options including, the expandable, large-capacity main compartment, a large mesh pocket for storing gear, an organization panel for keeping small items organized, zippered pockets on the waist belt, and two detachable pouched on the backpack straps. The adjustable waist belt and sternum straps help reduce bounce and stabilize heavy loads. The Tac Pac also comes equipped with a 3L HydraPak® and an exterior water bottle holder that you can stay hydrated while on the go.