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Item #: gei0014


Hydration Engine Reservoir

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Regular Price: $45.95-48.95


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2 Liter

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  • 2 Liter
  • 3 Liter
  • Watch GEIGERRIG Hydration Packs
  • Watch Geigerrig 2013 Decree
Product Information

Product Information For The Geigerrig Hydration Engine Reservoir


Brand Geigerrig
Weight 1 Liter: 8 oz / 210 g
2 Liter: 9 oz / 240 g
3 Liter: 10 oz / 260 g


The Geigerrig Hydration Engine utilizes a patented two chamber system and features several key components that provide benefits for any hydration pack user. Geigerrig hydration bladders are compatible with most other packs. Spray to drink, Spray to Cool, Spray to Clean, Spray to Share.


  • Slide Top and Wide Mouth Bladder: Slide top allows the entire top of the reservoir to open up to provide easy access for cleaning, drying, and filling
  • Pressure Bulb: Pressure bulb and pressure tube provides the mechanism to pressurize the hydration bladder, utilizing the patented two chamber system
  • Surge Protector Valve: Bite valve has an on-off switch as well as a special configuration that makes it uniquely suitable for pressurized, spray hydration without leakage
  • Quick Release Valves: Quick release valves allow you to easily disconnect the tubes and leave them positioned in the hydration pack while you remove the reservoir for filling and cleaning
  • 15 Denier Polyurethane minimizes any ballooning affect that may occur when the reservoir is pressurized for spraying
  • Compression Backing Nylon helps protect the reservoir as well as prevent any ballooning effect on the air side of the patent pending pressurized Ogwa bladder
  • Geigerrig hydration packs contain nylon sleeves that help with sliding the hydration bladder into and out of its sleeve
  • Dimensions: 7 x 12 in (2L); 7 x 16 in (3L)

Reviews For The Geigerrig Hydration Engine Reservoir


by PowerReviews
GeigerrigHydration Engine Reservoir

(based on 4 reviews)


of respondents would recommend this to a friend.



      Best Uses

          • Was this a gift?:
          • No (3)

        Reviewed by 4 customers

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        Fantastic idea, which works, but too big

        By Rick

        from New Zealand

        Verified Buyer


        • Easy to fill
        • Pressure Feed Works Well
        • Tough


        • Bad Plastic Taste
        • Bite Valve Poor
        • Very bulky

        Best Uses

        • Running

        Comments about Hydration Engine Reservoir:

        Was very excited to find this item and to receive it as drinking from most bladders for me is a chore. Pumping air into the bladder is easy but makes it enormous and I truly don't know how you could use this for backpacking, i.e. it'd take up a massive amount of room in a backpack.

        When air has been pumped in the water really does blast out (relatively) and this is very cool. This would make the bladder ideal for exercise where you do not have to pack it in a backpack, say, like running or maybe a day hike. However I purchased it for backpacking and really won't be able to use it because of the bulk, and because it has an extremely bad plastic taste (even after being washed out).

        Shame, as it s a great idea.

        • Was this a gift?:
        • No

        Great idea, very bad plastic taste.

        By RangerRick

        from New Zealand

        Verified Buyer


        • Easy to drink from
        • Good pressure
        • Tough As Anything


        • Bad taste
        • Huge Size When Inflated

        Best Uses

          Comments about Hydration Engine Reservoir:

          This is a great idea, and having the pump means it's the easiest bladder to drink from. Really does squirt out. The bladder itself is tough as anything and there's no concern about it bursting, video's show it being dropped from atop of a building fully inflated without a leak.

          However, when it's inflated I have no idea where you could store it in a normal backpack, it's massive. Also, the plastic taste (even after several wash, rinse cycles) is extremely bad. Wasn't too keen on the bite valve, seems cheap.

          • Was this a gift?:
          • No

          Clean way to drink

          By kingazteca

          from California

          Verified Buyer


          • Easy Cleaning
          • Great price
          • Well Made


          • tad bulky

          Best Uses

          • Sharing

          Comments about Hydration Engine Reservoir:

          Awesome. I have seen all types of hydration system but this is by far the best one I have seen. With one pack I can share water with whole family and the family dog or other people or pets for that matter, because no one ever touches the mouth piece. Just squeeze and share. It's a good price too for what it does and the company stands by its product.

          • Was this a gift?:
          • No

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          Questions & Answers

          Q & A For The Geigerrig Hydration Engine Reservoir

          Do you have questions about this product?

          get answers from real customers and in-house experts with AnswerBox.

          2 Questions | 2 Answers
          Displaying questions 1-2
          • Hydration Engine Reservoir


            What is the better attachable filter for this reservoir for NE USA, typical mountain stream/lake water? The regular in-line or the in-line virus? Is the virus overkill for my use? Will the regular one do the job at providing safe drinking water?
            Asked on 2/6/2014 by mykl

            1 answer

            • Staff Reviewer


              In the US, we don't typically have to worry about getting a virus from the water. You should be just fine with the In-line filter, not the Virus filter.

              Answered on 2/10/2014 by Evan - Gear Expert from
          • Hydration Engine Reservoir


            What are the dimensions of the Bag for the 2l and for the 3l? Trying to decide which would fit best.
            Asked on 6/15/2013 by Chris

            1 answer

            • Staff Reviewer


              Dimensions are 7 x 12 in for the 2L and 7 x 16 in for the 3L.

              Answered on 6/18/2013 by Dallon - Gear Expert from
          Displaying questions 1-2

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          Shipping Information

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