The BLACKHAWK! 3-Day Assault Back Pack is mid-sized, frameless backpack that features a detachable sternum strap and padded, removable waist belt for extreme versatility. The inside features a main compartment, small cargo pouch, and cargo pocket pouch to fit an optional 100 oz. BLACKHAWK! Hydration System. Features: Constructed of heavy-duty 1000 denier nylon; compatible with BLACKHAWK! Hydration System; sleeping bag straps and padded shoulder straps with D-rings for equipment attachment; detachable, elasticized sternum strap with silent release buckle; compartments are closed by durable YKK zipper and sliders with silent pulls; ventilating back panel and silent zipper pulls; dual side-detachable, padded waist belt; and a reinforced drag/carry handle. Main compartment: 20”L x 13”W x 6”D Front Compartment: 14.5”L x 12.5”W x 2.5”D Cubes: 2000 cu. in. / 37 L In 1990, a Navy SEAL was navigating a minefield when his pack failed. As his gear tumbled to the ground, he vowed that if he got out of there alive he would make gear the right way. Today, this commitment to quality and reliability applies to everything we do. We’re constantly researching, refining and perfecting every detail to provide products that won’t let you down. At Blackhawk, we're not just making gear; we’re honoring a vow.