The ArmorBak is specifically designed to attach directly to the back of an IOTV, MTV or plate carrier with the CAMELBAK Direct Armor Attachment System (D.A.A.S.). The system eliminates the need for shoulder straps and minimises side-to-side movement. The D.A.A.S. system also enables the user to pressurise the included 3L, 100oz Mil Spec Crux Reservoir for rinsing equipment in the field. D.A.A.S. (Direct Armor Attachment System) quick release buckles allow for a one-time set up and rapid attachment/removal from any plate carrier with MOLLE D.A.A.S. Quick Attach Pressure Strap increases stability and makes on-the-move hydration, rinsing glasses and goggles easier Dual zippers for quick reservoir removal and easy refill 5 mm closed-cell foam on front and back panels for insulation Infra-red compliant fabric, buckles and webbing Add or remove name tags and unit badges quickly with integrated hook-and-loop Uses 500D Double-rip Cordura Fabric for the ultimate combination of strength and durability Gear Capacity: 3.0 L / 183 cu in