On the battlefield and during night ops, the ergonomic and low profile design of the ThermoBak keeps you comfortably hydrated and ready to go.Use 6 point D-ring attachment points to add to load bearing vest or ruckQuick-release shoulder straps unclip for easy removal and stow-away inside built-in pocketAdd or remove name tags and unit badges quickly with integrated hook-and-loopTough, abrasion-resistant 1000D Cordura exteriorExternal fill allows for easy access to the OMEGA Reservoir for easy filling, cleaning and ice additionSide zipper allows for easy access to the reservoir and the In-Line MicroFilterIncludes HydroLink Big Bite Valve CoverInsulated Neoprene tube cover keeps liquids cool or warm while protecting from harmful UV raysIncludes HydroLock for easy one-handed on /off operation7 mm Closed Cell PE foam on front and back panels for insulationAdjustable sternum strapReinforced retainer ring with ergonomic webbing handleGrommet drain hole on front panelD-Rings for tube managementHanger loopHook-and-loop strap managementLow infrared reflective (LIRR) buckles, webbing, and materials on the Coyote and Army Universal Camo modelsPack Dimensions: 18 in x 10 in x 3.5 in (460 mm x 250 mm x 90 mm)Hydration Capacity: 100 oz (3 L)Total Volume: 183 cu in (3 L)Pack Weight: 1.5 lbs (.7 kg) with empty reservoirIncludes the 100 oz (3 L) OMEGA® Water BeastTM Reservoir with HydroLink Exit Port