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Osprey Hydraulics Reservoir - 3 Liter

    Osprey Hydraulics Reservoir - 3 Liter

    The 3-liter Osprey Hydraulics™ reservoir conforms to your back's shape even when full, resulting in a precise, stable and comfortable fit in your backpack. See details

    • $36.00

    Item # 846397

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    The 3-liter Osprey Hydraulics™ reservoir conforms to your back's shape even when full, resulting in a precise, stable and comfortable fit in your backpack.

    Product size and color

    The 3-liter Osprey Hydraulics™ reservoir conforms to your back's shape even when full, resulting in a precise, stable and comfortable fit in your backpack.

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    The 3-liter Osprey Hydraulics™ reservoir conforms to your back's shape even when full, resulting in a precise, stable and comfortable fit in your backpack.

    • Taste-free metallocene polyethylene material is strong and durable; material is BPA and PVC free
    • Antimicrobial formula helps prevent the growth of bacteria and mold inside the reservoir
    • Backer plate shapes the reservoir to keep it low-profile so it won't interfere with the comfort of your backpack
    • Includes a magnetic sternum strap that you attach to your backpack, giving the magnetic bite valve a place to rest when it's not in use
    • Wide-mouth opening makes it easy to fill and clean the reservoir; cap quickly opens and closes with a 3/4 turn
    • Osprey Hydraulics reservoir has a 180° pivoting on/off valve that rotates for quick flow control


    Item 846397

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    Related items

    Osprey Hydraulics Reservoir - 3 Liter Specs
    Best use
    3 liter
    101 fluid ounces
    Metallocene polyethylene
    16 x 7 x 3 inches
    10.9 ounces
    Liquid capacity (L)
    Liquid capacity (fl. oz.)
    Bite valve shut-off switch
    Wide-mouth opening
    Quick disconnect tubing
    BPA free

    Osprey Hydraulics Reservoir - 3 Liter

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    Osprey Hydraulics Reservoir - 3 Literis rated3.4118out of5by17.
    Rated1out of5byfromI'm disappointed in this replacementI bought the 3 liter hydraulics reservoir to replace the original reservoir in my Manta 30 day pack. The replacement is too wide and forces the reservoir into my back. This is not a good replacement if you have a Manta 30.
    Date published: 2014-04-04
    Rated4out of5byfromWorks great and REI support is wonderfulMy wife and I each have one of these 3L bladders. We use them regularly and have do so for the past 10 since we got them. They have performed well, been easy to use/fill, and the plastic frame aids in their stability. I did have an issue that did not excite me, but all ultimately went well. The nipple where the hose attaches to the bladder cracked on mine. I was perturbed as the items in the bottom of my pack got soaked, but things go wrong occasionally. I took it back to REI and they swapped it out. I plan to continue using these at this time due to the positives.
    Date published: 2013-12-30
    Rated5out of5byfromgreat hydration pack!Actually, I own 3 of these hydration packs. They are easy to fill, easy to dry out, and very durable. I use the 2L for snowboarding and it's almost 4 years old now. I bought the 3L for Mount Whitney and it performed great. No complaints.
    Date published: 2013-10-30
    Rated3out of5byfromNot SureThe connector from the hose to the bag broke off after a couple of uses. The staff and REI was very hesitant to replace the bag insisting it wasn't a defect in the product and that I had abused it. Not the case. I've had the same reservoir from a different brand for ten years and never had a problem. After talking to a manager I finally was able to get a replacement. (This was the first thing I ever tried to return to REI after how many decades?) That being said, I like how the reservoir fits and rides in my pack (it's a pack I use for backpacking, extended climbs, and ski mountaineering). Love the magnet hose to strap feature. As long as it holds up, I think it's a good product. I would recommend it with caveats.
    Date published: 2013-10-23
    Rated4out of5byfrom3 liter bladderFirst, Osprey makes a great product. And I would recommed Osprey to anyone. On a recent mountain bike ride I fell onto my back rupturing the bladder. Instead of it failing at points which you would think would be obvious, seams, filler cap, drinking tube, it burst just above the filler cap. I purchased this one to replace it. My pack is a 2012 Viper 10 with a 100oz/3 liter bladder. This new redesigned bladder does not fit into my pack. It is too big. So if you have an older Osprey you might want to try to source one of the old style bladders.
    Date published: 2013-10-17
    Rated2out of5byfromNot as good as the originalThis reservoir is a little larger than the original; it still fits in my Raptor 10 pack but I have to fold over the ends of the reservoir to zip the pack closed. The worst modification is the closure; the shape (too wide and too shallow) makes it hard to get a good grip and close properly. It takes effort to ensure the lid is going on straight and if you don't, your water will come gushing out when you're not expecting it. The hose is also longer which may not be a problem for some, but I've found it's too long for me.
    Date published: 2013-10-15
    Rated4out of5byfromGood productI do most of my hiking and backpacking and all my cycling in the dry Southwest, so large capacity is a must. The magnetic clip for the bite valve is a nice touch, as is the swivel feature, and the valve works well, with good flow. This version lets you pick which side of the filler to route the drinking tube. My older one has the tube sewn permanently on the right side of the filler cap. For someone my size, this makes the tube just too short to be routed down the left shoulder strap where I prefer it. There's a large stiffener/handle that makes it easy to hold open while filling. The large cap makes it easy to fill or clean, although it doesn't fit any of the popular filters. It's also not the easiest to close securely, particularly for people with small hands, but once properly closed, it doesn't leak. The rigid stiffener and large cap add weight, making it a little heavier than most other brands. Because of the rigid stiffener, it won't roll up and stow away when not in use, if that's a consideration.
    Date published: 2013-10-03
    Rated1out of5byfromNeeds workI bought this on the recommendation of an REI staffer who pointed out several features that I liked, including the easy-to-open lid, a handle that makes filling the bladder a snap, and a magnetic clip to keep the mouthpiece connected to the brest strap on my pack. Unfortunately, the bladder leaked the first day out on a 6-day hump in the Sierras. My sleeping bag got soaked requiring me to stuff it in a garbage bag before loading onto my pack. The leak was on a seam where the plastic handle connects to the bladder. In addition, the mouthpiece constantly leaked. Obviously, there are some construction issues that far outweigh the features that sold me on the product in the first place. I returned the item the day I got back and REI replaced it with another brand with no questions asked.
    Date published: 2013-08-21

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