Hydration is great, but so is ballistic armor. Now you can have both with the ArmorBak(TM). Lightweight and simple to use, this pack is specifically to attach to the back of the IOTV, MTV or any other vest that offers a MOLLE/PAL back panel. The CamelBak Direct Armor Attachment System (D.A.A.S.(TM)) allows pack to be attached directly to IOTV or MTV without interfering with the rapid removal mechanism Simple side release buckles for quick attachment and removal from vest The Quick Attach pressure strap increases stability and makes on-the-move hydration, rinsing glasses and goggles easier Low-profile 100 oz reservoir for reduced profile in tight areas and riding in vehicles SPECIFICATIONS HYDRATION CAPACITY: 3L/100 fl oz HYDRATION TYPE: Mil Spec Antidote Short BPA/BPS/BPF FREE: Yes QUICK LINK DISCONNECT: Yes GEAR CAPACITY: N/A PACK WEIGHT: 0.45 kg/1 lb DIMENSIONS: 41 x 25 x 8 cm/16 x 10 x 3 in