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About the Product

When a product is endorsed by the United States Marine Corps, you know it's built to last! The CamelBak ThermoBak 3L, approved by the USMC, is a lightweight hydration pack that provides added storage space as well as reliable, easy-to-access hydration. At the heart of it is a durable, Mil-Spec Antidote Long reservoir that holds three liters of water for long days in the field or long hikes, the kind Marines love to do in 100 degree weather! While this pack is primarily a hydration only pack, there is an additional eight liters of space for the essentials as you scout, hike, or adventure. Water comes easy thanks to the signature Big Bite valve opening and PureFlow tube, making high-flow water delivery happen with little effort. The pack features a side zipper for easy access and the durable ripstop Cordura and high-density nylon construction will make it through any mission or adventure you embark upon.


  • **NOTE: The ABU Camo model has a different zip opening configuration than the Black model. Please see the images for this difference**
  • Mil Spec Antidote Long 100 oz. reservoir
  • Size: Length: 18", Width: 9.2", Depth: 5"
  • Dry weight: 1.3 lbs
  • Fabric: 500 denier Ripstop Cordura and 420 denier high-density nylon construction
  • Insulated 5 mm closed-cell foam panel and hydration compartment
  • Big Bite valve with cover
  • Insulated tube cover
  • 42" PureFlow tube
  • QL HydroLock Bite Valve Adapter
  • Antidote fold-down air-light fillport
  • Quick Link exit port and drink tube
  • Drain hole on back panel
  • D-ring attachments for MOLLE vests or belts
  • Integrated hook-and-loop name panel system
  • Quick-release shoulder straps
  • Adjustable sternum strap
  • Side zipper for easy access
  • Mil-Spec Antidote meets the USMC hydration system requirement for tensile strength, puncture resistance and burst resistance
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