CamelBak MULE and HAWG Military Hydration Packs - YouTube
Amazon.com : CamelBak - M.U.L.E. 100oz Mil Spec Crux Black (1741001000) : Sports & Outdoors
Camelbak Ambush AB 500, Thermobak AB, and Linchpin Tactical Hydration Packs/Reservoirs with Direct Armor Attachment System (D.A.A.S.): Strap your tactical hydration directly to your tactical armor plate carrier/tactical vest system! – DefenseReview.com (