CamelBak ThermoBak 3L Military Spec CRUX Hydration Pack by CamelBak ( Thermobak-3L-Mil-CRUX)
Amazon.com : CamelBak Ambush Hydration Pack, Black, with 100oz (3.0L) Mil-Spec Crux Reservoir, One Size : Sports & Outdoors
AMBUSH™ Hydration Pack 3L with 3L Mil Spec CRUX™ Reservoir - Military from CamelBak UK
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 (