The brutally strong choice of the special op's community, tested, proven, and big. This is the largest of all the HydraStorm Pack Systems. Giving you over 2240 cubic inches of massive storage. Unique "Intercooler". Back panel and rigid bottom keep weight centered and efficient. Comes with utility loops on outside of pocket. Includes 100 oz. HydraStorm system fully insulated within the main compartment. Features include: Intercooler ventilation system: Compression molded foam intercooler back panel revitalzes, cools, and enhances pack support and performance. Contoured shoulder straps. Fully padded and removable waist strap. Includes accessory/sleeping bag straps. Includes Grip-Force heavy duty top carry/drag handle. Includes all #9 YKK zippers with sure-grip pulls. Includes our tube routing system. Includes our fully adjustable and removable sternum strap. Includes our all new intercooler back panel. Dimensions: 20" x 13" x 6". Cubes: 2240"