BLACKHAWK! Phoenix Patrol Pack Constructed of heavy-duty 1000 denier Nylon Weapon lock System lined with hawktex External side compression straps Reinforced drag/carry handle Fully adjustable pack height and sway stabilizer System Contoured S shoulder straps with a detachable sternum strap and torso lumbar support Internal pouch fits an optional 100 oz. BLACKHAWK! Hydration System Constructed of heavy-duty 1000 denier nylon Fully adjustable pack height and sway stabilizer system; two sets of securing straps (ground mat, sleeping bag, etc.) 2650 cu. in.