This is a genuine US military surplus Camelbak ILBE Hydration System with Bladder, in Tan. This is the 3L Camelbak Storm system that comes with a bladder (if you choose) with insulated drinking tube. Approximately 17.5" (H) x 7.5" (W).
These hydration systems were acquired from the US military in bulk, and appear to be in very good condition, showing only minor signs of use. No rips, holes, tears, or anything that would impact the intended use of this pack.