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  • Osprey Packs - Hydraulics Hydration Reservoir - Blue
  • Osprey Packs - Hydraulics Hydration Reservoir - Blue

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Osprey Packs Hydraulics Hydration Reservoir

$40.00 - $42.00

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    • Blue, 2.0L
    • Blue, 3.0L


    55 Reviews


    Hydraulics Hydration Reservoir

    Custom-fit suspension systems are Osprey's bread and butter, so it makes sense that the Hydraulics Hydration Reservoir is shaped with a rigid backer plate to prevent any interference with how your pack fits and carries. Additionally, the durable TPU reservoir material keeps water tasting exactly the way it should, and the bite valve keeps the hose secure when you're cruising up the trail.

    • BPA- and phthalate-free material
    • HydroStatic backer plate
    • Bite valve
    • Hose shut-off valve
    • Item #OSP006W

    Tech Specs

    TPU (thermoplastic polyurethane)
    [2L] 70 oz, [3L] 100 oz
    bite, magnetic
    [2L] 14 x 6 x 3 in, [3L] 15 x 7 x 3 in
    Claimed Weight
    [2L] 10.6 oz, [3L] 10.9 oz
    Recommended Use
    hiking, backpacking
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Easy to drink and fill

    • Familiarity: I've put it through the wringer

    This is the best reservoir I have used. The top opening makes it easy to fill. The stiff back helps to slide it into your pack without unpacking everything. The bite valve can rotate shut so no accidental leaks when in transport and its easy to drink out of. That is probably my favorite part. Too many bite valves make drinking seem like a chore. With this one you get plenty of water easy, its a nice bonus while on trail.


      After cleaning the reservoir for initial use, I filled it up and let it sit on a paper towel. When I came back, the paper towel was drenched. I repeated the test after thoroughly drying the outside of the reservoir to make sure I wasn't crazy.

      thirst quencher

      • Familiarity: I've put it through the wringer

      I purchased this to replace my old 2.5L reservoir for my Manta 24 and it works great!

      Leaks at the welds

      • Familiarity: I've used it several times

      I have 2 leaking 3 liter bladders. They leak at the welds. One was replaced under warranty. Last 2 rides the replacement has started to leak. Pinhole size.

      Oh no!! This is definitely something I will get to Osprey right away. Clearly a defect issue, and thank you for bringing it to my attention. This is NOT the norm, but thank you for letting us know so we can address it with QC checks.

      Osprey Rep

      So many great features

      • Familiarity: I've used it several times

      I love this reservoir. It goes with me skiing and I do need to add the insulation sleeve but as for the features it's actually packed. I love how the hose detaches at multiple locations to make reeling and cleaning easier. Also the sturdy backing makes it less floppy in the pack.


        My brother said he wanted a bladder for Christmas. He didn't specify a brand so I bought this one because of the hard back feature. I figured that feature would make the bladder more universal across a range of different packs, since it will stay more rigid.

        Never stop for a drink again

        • Familiarity: I've put it through the wringer

        I love this thing. I used it while hiking the Camino De Santiago last spring and it made my experience infinitely better. I always hated stopping to pull out my water bottle while backpacking, and this has made that a thing of the past. It holds plenty of water so most days I only had to fill it once before I started walking. It's easy to fill up, doesn't leak and integrated perfectly with my Exos 38L.

        Great Stuff

        • Familiarity: I've used it several times

        Really dig this bladders, going to be sticking with these for the future. Can't go wrong with Osprey. Works great, haven't had any issues, and the warranty is nice addition as well.

        Hydrated Bliss

        • Familiarity: I've put it through the wringer

        While working in the desert for a summer, this thing became my best friend. Its easy to refill, slip into a backpack, and keep in your pack for hours.
        I did receive a defective one with a slight tear in the bladder, but Osprey/ Hydrapak was super easy to work with and replaced it promptly. Overall, this purchase has proved to be completely worth it for how many times it's basically saved my life on long days on the trail.

        Two types.

        • Familiarity: I've put it through the wringer

        There are two types of people in the world:

        1) People who have accidentally left the water reservoir in their pack for a few weeks (or months) to get really funky-smelling (and moldy, if you're extra lucky), and...

        2) Liars.

        This is a wonderful product for both groups. Additionally, the magnetic bite valve and closure mechanism are quite nice. Buy it.


        • Familiarity: I've put it through the wringer

        5 sentences

        I’ve been really happy with this reservoir so far. I haven’t experienced any leaking from the bite valve, which happened frequently with my old bladder. It fills easily and the hard back makes getting it in and out of your backpack a breeze. I also really appreciate the magnetic attachment to keep the hose where you want it. Overall, a great purchase!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

        Missing a key part

        • Familiarity: I've used it once or twice and have initial impressions

        I generally like Osprey's stuff and this appears to be a good reservoir. The closure mechanism is well thought-out, and the magnetic hose holder is more useful that I expected. I debated if the stiff-back design was worth the extra weight and am glad that I went with this design. All good EXCEPT for th3 fact that it does not come with a cover for the bite valve, which would only add a few grams of weight and cost about 5-cents to manufacture. This seems dumb. Other than that, it is a great product.

        Easy to use

        • Familiarity: I've put it through the wringer

        This easy to use reservoir is compatible with hydration bladder compatible packs that support the selected volume in liters. Its design prevents leakage and fills easily from the top. The most durable bladder/hydration/reservoir system I've used to date. I use it for backpacking, mountain biking, hiking, climbing (before and after I climb)... works great for all of them.

        Are you supposed to be able to refill this through the detachable hose, or is that simply to keep your hose in your backpack while you take the reservoir out to refill?