Free 2-Day Shipping on Orders Over $50*

Detail Images

  • MSR - Hydromedary Hydration Bag - Red- Straight Valve

Current Color

  • MSR - Hydromedary Hydration Bag - Red- Straight Valve

MSR Hydromedary Hydration Bag

sale from $26.21 $36.9525% Off

Free 2-Day shipping on orders over $50*

Select your style & size:

Select options
  • Select options
    • Red- Straight Valve, 2L
      sale $26.21
    • Red- Straight Valve, 2.5L
      sale $27.71

    46 Reviews


    Turn water into liquid gold for your dehydrated body with MSR Hydromedary Hydration Bags.

    The newly-designed Hydromedary Bags are MSR's most durable hydration systems. MSR built the Hydromedary Bag out of tough 200D cordura to take the abuse of the trail. These Hydromedary Bags come complete with a drink tube, a high-flow no-leak bite valve, and a low-profile easy-fill handle. Slip a Hydromedary Bag in your backpack for an instant hands-free hydration system.
    • Item #CAS0327

    Tech Specs

    200D Cordura laminated with food-grade polyurethane
    [2L] 2 L, [2.5L] 2..5 L, [3L] 3 L
    Claimed Weight
    [2L] 5.8 oz, [2.5L] 5.9 oz, [3L] 6.2 oz

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Giant reliable bag

    • Familiarity: I've put it through the wringer

    I lost my Camelbak and needed a replacement. I use an MSR water filter for backpacking so I decided to get an MSR one so that they will be compatable and I love it. The adapter for my filter screws directly to the bag = no spillage or lost water while filtering, fast and easy. I do miss my 90degree bite valve from my Camelbak, not sure if MSR makes something similar, but the valve works just fine and is easier to feed through hydration ports in my backbacks. Win some you lose some I suppose!

    Quite the water sack

    • Familiarity: I've put it through the wringer

    I'm glad I went with the simple and durable MSR bladder over a potentially more-fragile bag. Haven't noticed an odor or the cap leaking. I do wish the cap was attached somehow but I haven't lost it yet. The mouthpiece works well, even when it gets a little frozen. 2L is more than enough for most of my outings.

    It works like it should, and for the sale price you really can't go wrong. Why pay more for features that may or may not be worth it?

    Durable, with sufficient volume

      I was looking for a “bladder” that would hold up under the rigors of back-packing and extreme day-hiking. I’ve been on several trips with friends and ALWAYS, at least one person had a bladder malfunction (usually associated with the tubing/bite-valve fittings). I’ve never had such an issue with the MSR. I recommend this above all others.

      Durable, with sufficient volume

      Great, but the stock cap leaks.

      • Familiarity: I've used it several times

      Used it on 2 climbing trips so far and 2 hiking trips. I noticed my bag getting damp and after some experimentation, figured out the stock cap was leaky for me. Switching out to a Nalgene cap (thankfully same size) fixed all leaks.

      Durable and Reliable

      • Familiarity: I've put it through the wringer

      I take this bladder with me everywhere. I have no idea how it doesn't have leaks in it yet considering all of the sharp branches, dog claws, etc. that have definitely struck it, but it really holds up to abuse. Hose is still working fine for me.

      Great bag, hose needs work

      • Familiarity: I've used it several times

      I've taken this bladder on a few trips, most recently to the Timberline Trail in OR. The bladder slipped easily into my Lowe Alpine backpack with the built in bladder holder. I haven't experienced any leaks, and as with their filter bags, MSR has made what appears to be an almost indestructible bag. The bag is heavy duty without adding excess weight. If I had any complaints it would be primarily with the hose. The hose is very short compared to Camelbak and other similar bladders. I'm about 5'10" and consistently tug on the hose to get enough slack to drink. Further, it would be nice if the cap stayed attached to the bag. It's not a big issue and can be remedied but I'd like to see MSR redesign on the new model.


      • Familiarity: I've used it several times

      Been taking this bladder (3L) with me on climbing trips almost every weekend and to the gym 3 times a week for the past few months. No problems with leaks at all or any bad taste.

      When I'm not using it I throw it in the freezer to prevent and bacteria from growing.

      Great bladder

      • Familiarity: I've used it several times

      I run these in my Mystery Ranch and love them. Never had a leak.

      I hang them, leave the cap off, fill them and drop some Alka Seltzer in them to kill the factory funk.

      The cap needs a dummy cord, but that is easily done after purchase.

      my butt hurts

        bought two MSR Hydromedary Hydration Bag. one had a faulty molded cap. requested a new bag. cap good on that one but bag leaked. between the two systems ended up with one good bag. caps difficult to screw on. `easy to cross thread. price keeps going up, quality down.

        STRONG Odor!

        • Familiarity: I returned this product before using it

        Rinsed with warm water before using. Couldn"t stand the odor when I poured out the rinse water. The bag still smells. Reminded me of an old Dromedary I have from many years ago, thought MSR would have figured out hydration bags like so many other mfg's. Returning.

        Sick of leaky Hydration systems

        • Familiarity: I've put it through the wringer

        After problems with Osprey Hydraulics compatibility and leaking camelbaks, I decided it was time for a new brand. This bladder has done great so far. It is made of much tougher material than others, and its valve is very straight forward. The bag itself is very easy to store. I would trust this Hydration system to hold out for 5+ day backpacking trips.

        This bag has it all.

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

        I bought the 2.5L and have used it for practice hikes getting ready for two three-night trips in Utah this May. Right out of the package it was easy to fill and easy to get situated in my pack. It is the most durable bag I looked at and even lighter than most of the CamelBak and Platypus bags I compared it to. Weight is a big concern for me for overnight trips and am impressed at the durability of this bladder for how lightweight it is.

        Durable & Well Built

        • Familiarity: I've put it through the wringer

        This is the best hydration bag I've purchased, by far. Super light, but well built, and I never worry about it puncturing or leaking. The Nalgene style lid is also a plus, as it allows easy access for adding water, attaching a filter, or drying it out. I had the older model (clear, more plastic-like) which lasted 4 or so years before leaking, but I've not encountered that problem with this bag.

        Best personal dromedary bag out there.

        • Familiarity: I've put it through the wringer

        I have been through a few of the hydration bags and the things that tend to fail is the mouth piece or the bag itself. Well the MSR hydromedary bag has stood the test. It came with me to Patagonia, Chile for a month long kayak expedition and came out unscathed. It came with me on a month long mountaineering expedition also in Patagonia, Chile and survived without a problem. It has since come with me on extreme adventure races and week-long paddling expeditions in Florida on coastal waters and inland rivers. I use it to hydrate obviously, but also to cook and clean. Granted I am not negligent of my gear and don't leave a vital item like this lying on the ground to be stepped on and punctured, but I do take it on trips to places that put an essential piece of gear like this to the test in all the elements.


        • Familiarity: I've put it through the wringer

        The material they used for this hydro bag is sick! i strap it to my back with paracord and never worry about it getting ripped or caught on anything and leaking. bottom line, buy it !

        My NEVER-FAIL, go to hydration system.

        • Familiarity: I've put it through the wringer

        This is my third MSR Hydromedary. My third you ask? It is because I gave away the first two to folks who came out into them-there-mountains with other Brand-Name" bladders only to have them fail resulting in backpacks full of wet clothing, tents, sleeping bags, etc. I have backpacked and hiked throughout Colorado and California and most recently with a bunch of guys on an annual hike into the Indian Peaks Wilderness Area. During each trip, without exception, someone has had their bladder of choice blow-out. Not me. There are I suppose only a few things that can go wrong with a bladder, but when they do, one is in a world of hurt. The materials (very durable) and workmanship are exemplary and the service from is equal to the product. Since I go through water rather quickly, the 3L is a great size and I do not notice the added weight nor have I every worried about running out. I have not noticed any taste imparted by the bladder and it NEVER has leaked. NEVER. If you cannot guess, I highly recommend the MSR Hydromedary and


          Heavy duty construction. Takes a beating with no problem. The 3L fit great into my North Face Big Shot daypack as well as my Osprey Atmos 65 backpack. Got smashed in the car, tossed on granite slabs, and suffered through freezing weather without a problem. The small snap tube clip was a joke but replaced that with a chest strap magnet and no issues.

          My new standard

            I bought the Hydromedary 3L soon after my, few month old, Camel bak breached the bottom seam in the reservoir, and filled my pack with water early into a day hike. I've been using it almost daily for the last year and couldn't be more impressed with the construction. I apparently am pretty abusive on my gear, or at least my standards for durability are very high, and this thing is bullet proof. it's a great product, and I would recommend nothing else. MSR, once again, sets the standard for reliability.

            Great Durability and Mouthpiece

              I love the durability of the fabric and complete lack of aftertaste. I have had zero leakage from the hose or mouthpiece. I also really like the mouthpiece. It does take some time to get use to biting it to open it and the flow is not super high. However, I like to sip water as I go so that's perfect. Plus the mouthpiece seals so well that you don't have to close the valve. My only big complaint is that there is no loop in the center to attach it to a pack that's built for a Camelbak or an Osprey bladder. There is a small opening in the plastic piece you use the lift the bladder. I rigged a piece of heavy gauge wire from Home Depot to make a loop I could attach inside my pack. Finally, a small nitpick, the lid should stay attached when you take it off so you can't drop it or lose it. I like that feature of my old Camelbak. Overall though, they nailed the three most important features in my book - hose, mouthpiece and durability.

              Great Durability and Mouthpiece
              Unanswered Question

              I'm looking for a hydration bladder as part of my gravity set up with a sawyer mini. I'm hoping the tube fits on the sawyer intake nozzle..anyone have experience with these bladders (or others) with sawyer products?

              Going backpacking at Philmont Scout Ranch this summer. Our trek has two dry camps and we need something to carry extra water. Two years ago we used collapsible plastic water jugs. They were no fun and hard to carry. Any sugestions?

              What happened to the 90 degree elbow bite valve version? Did it get discontinued? Is the straight valve the new version?

              I have managed to get a tiny, tiny hole...

              I have managed to get a tiny, tiny hole in my bag. It is not even visible to the naked eye but obviously still big enough for water to slowly seep out. Do you know if it is possible to repair it somehow? I tried a bicycle tube patch but it didn't work.

              Thank you!

              Best Answer

              As long as you know where the hole is located, specifically, what I would recommend is this:

              Make sure the bag is completely drained of water, then take an alcohol swap/prep pad to clean the area of all dirt and grime (scrub this thoroughly), then take a Tenacious Tape patch ( and place that hole in the center of the patch, press firmly to confirm it seals completely, then test.

              TT is pretty bombproof, I would definitely try that before you throw duct tape or something on it and get that adhesive all over it.

              I'd suggest the same solution used for similar leaks on thermarest pads:

              Identify location,

              Clean the area,

              Gently rub contact/rubber cement, seam grip, or other sealant (you may want to look into something non-toxic as this is for drinking water, though contact will be minimal) into the fabric,

              Let dry completely before testing.

              Is the one on the left, the shortest,...

              Is the one on the left, the shortest, fattest one, the 2.5L or the 2.0L? MSRs website says the 2.5L length (14.5") is shorter than the 2.0L (17"). ?


              Trying to determine which size will fit well in my marmot pack. Thanks!

              Kelty Ravin 2500 Which size will fit the...

              Kelty Ravin 2500

              Which size will fit the kelty raven 2500?

              Hello, Does the MSR water filters screw...


              Does the MSR water filters screw on to this hydration system for easier filling ?

              Thanks &
              Take Care

              Which hydration system will work in the...

              Which hydration system will work in the Columbia Specialist winter pack. 3L capacity.

              arcteryx miura 30 pack? Mine won't take...

              arcteryx miura 30 pack?

              Mine won't take my osprey 3L bladder. Will one of these in 2 or 3L work? Does it have a solid frame like the osprey? That seems to be why mine wont fit. Thanks!

              Is anyone disconnecting the hose to use...

              Is anyone disconnecting the hose to use this at times as a dromedary? Is there a way to seal the hose connection so it will not leak?

              Does anyone know if this would fit an...

              Does anyone know if this would fit an Arc'teryx Altra 65 Pack? I know that the Platypus 2L does, but if anyone can tell me if this would work too, that would be great!

              I saw what appear to be the empty dimensions....

              I saw what appear to be the empty dimensions. What are the dimensions full? I have a nylon bag inside my backpack that is about 10" x 10" and about 4" below what looks like an opening for a tube. That doesn't match up very well with any of the empty dims. I'm trying REALLY HARD to start backpacking ... but it's an uphill climb and I haven't even left my front door.

              Best Answer

              Gear can be quite confusing, especially if you don't have a store near you to try things out. That "nylon bag" you're referring to is a hydration sleeve, and the tube opening is surely a port for the tube of a hydration system. You shouldn't have any trouble fitting any of these sizes in your hydration sleeve - they're typically designed to fit ~3L of liquid.

              A simple and cheap alternative to consider would be just using water bottles. A lot of experienced backpackers I know (myself included) don't even use "hydration systems" for the inconvenience of measurement, frequent leaks, and difficulty of sharing that they are notorious for. For liquid, my personal recommendation would be getting a 1L nalgene, and a 1-2L platypus. If you're cheaper than that, any 2 disposable 1L bottles will work, and are cheap and ultralight.

              To answer your question, freestanding, not pushed into your pack, these reservoirs swell (barrel out) to around 3" thick when full. The height and width don't change. If you have a reservoir already, stop second-guessing yourself, fill that baby up, and get out there. The experience of trial and error is the best way to learn what works and what doesn't. I agree with Simon though, get yourself a 1L Nalgene. It's just a really practical piece of gear.

              I'm going to add to what Phil said here. Just cover the basics. Don't be a perfectionist about this stuff. You don't have to have the best of everything and you don't have to worry about too much. Just make sure of where you are going and when you will be back. Make sure that you have adequate food/shelter/warmth/water and just do it. Everyone has their own style and way of doing things. There is no wrong way of doing the right thing. You will develop your own style also, but you have to get out in the woods and start enjoying it to learn it. After you've been out a few times then you can start upgrading your gear.



              Best Answer

              It sounds like you have some funk going on. Fill it about 3/4 full with fairly hot water, then add 2-3 tablespoons of regular bleach or baking soda. Shake it up, let it sit for maybe half an hour. Drain it, rinse it a few times. Test it out for taste. Repeat if necessary. Let it dry open and poofed up enough to get some air flow for a couple days. That should hopefully do it for you.

              I have a MSR Miniworks EX water filter...

              I have a MSR Miniworks EX water filter which has an adapter for Nalgene bottles. Does the adapter work on this bag as well? From the picture above, it looks like it might be the same kind of opening as a Nalgene.

              Any bottle or bag with a 64mm opening will work. Nalgene was the first to standardize this, calling it their 'wide-mouth' bottle. You will find the 64mm 'wide-mouth' on many bottles from stainless steel, to aluminum, to various polyurethane and lexan-type bottles. The best thing about the Hydromedary, Dromlite, and Dromedary bags is that they will hold much more water at a significantly reduced packed weight and volume. By getting the Spigot Lid accessory, you can turn your hydration system or folding bottle into a camp sink. It is extremely versatile to have around camp. Highly recommended!

              I lost the lid. How do I get another...

              I lost the lid. How do I get another one?

              You can get in back in, but its tricky. Cut the outer house about an inch lower than the liner. Make a slit in the liner and then push the head into the tube holding the liner with your fingers. Then cut the rest of the liner off. Again, its hard, but it works.

              What is the handle like? I need to know...

              What is the handle like? I need to know if it is going to hang from the H2O clip in my backpack. The picture doesn't show where the handle is or how it is on the bag. Is it on the two holes on each corner of the bag? Thanks

              Best Answer

              Correction: there is a handle. It is the piece of plastic that you see below the cap in the above pictures. It is more of a large lip that aids in filling so you dont have to fuss with holding the threads of the lid or an awkward half-full bladder.

              I need to know the dimensions of each of...

              I need to know the dimensions of each of the 3 Hydromedary Hydration bags. Thank you.