Platypus Hoser Hydration Bladder

Priced: $22.95 - $24.95 Rated:   - 5 stars out of 5 by 19 reviews.
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Platypus Hoser Hydration Bladder -
Platypus Hoser Hydration Bladder Features.

Platypus Hoser Hydration Bladder.
The Platypus Hoser Hydration Bladder is one of the most versatile product among all. This latest product features greater durability with its modular design. It also flaunts a new hang loop and also surprises you with a taste-free tube. Its Slime Guard anti-microbial treatment ensures that the water stays free from microbes and bacteria and also keeps the water fresh. It converts any existing pack into hands-free hydration system as it fits into any pack, or used on its own around camp for drinking and cooking. The Hyper Flow bite valve offers the highest flow rate in the market. It comes in 1 L, 1.8 L, 2 L and 3 L capacity and the ultra light weight makes it suitable for any traveler. The Platypus Hoser Hydration Bladder is great for clean water.
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Key Features.


  • Converts any existing pack into a hands-free hydration system.


  • Modular design lets you create your own system.
  • Greater durability
  • New SlimeGuard anti-microbial treatment keeps your water fresh and taste-free.
  • HyperFlow bite valve offers the highest flow rate on the market.
  • Lightweight
You have a backpack and you'd love to stash a water reservoir with a drinking tube in it for quick, hands-free hydration on the trail. Grab the Platypus Hoser Hydration Bladder. Platypus made this reservoir with 100% BPA-free material, and added a SlimeGuard antimicrobial treatment to the inside so you won't end up with unidentified black bacteria camping out in your water bladder. The HyperFlow bite valve hooks you up to fast-flowing water, while the modular design fits into most backpack hydration sleeves.

Mountain Gear
A true workhorse of the hydration family, the Platypus Hoser is truly versatile - even your little brother will be able to find a multitude of uses for it.
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Average Price History: Price History
Review RatingNumber of Reviews
1.0L (34 oz.), Dimensions:6 in. x 11 in. Weight
1.8L (60 oz.), Dimensions:6.75 in. x 11.5 in. Weight
2.0L (70 oz.), Dimensions:6 in. x 16 in. Weight
3.0L (100 oz.), Dimensions:7.5 in. x 16 in. Weight
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Platypus Hoser Water BladderPlatypus Hoser Water Bladder$19.95 - $22.95

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Platypus Hoser Hydration Bladder Reviews:

Positive Reviews:

I'm a big fan of Platypus products (see my reviews of their GravityWorks water filtration/storage system, Platy SoftBottle water bottle and Shut Off Valve). I bought my Hoser in 2009 and went with the 3L version (3.8 oz) because it's nearly as light as the 2L and 1L versions (3.6 and 3.2 oz, respectively). For comparison, CamelBak's 3L Antidote Hydration Reservoir comes in at 7.0 oz. When I backpack, I try to limit water-weight and carry only 1L at a time. With the 3L Hoser, I have flexibility to carry more, if needed (i.e. if water sources are fewer and farther in between). I used a black Sharpie to add marks indicating when I've filled bladder to 1L or 2L (see pic). Otherwise, you need to add water to bladder and then cap and invert to see how much you've got!
I only carry water in my hydration bladders (no Gatorade or other energy mixes, etc.) and I clean and dry thoroughly immediately after each trip - so far, no "funk" problems for me. In my experience, Platypus products are very durable - mine take a beating and I've never had a leak. These bladders are highly recommended!

Scott Jasper at on 03/30/2013

Let me start off by just saying there's nothing extraordinary about this hydration system. If I had to sum it up in 2 words it would be 'simple' and 'functional.' This is saying a lot. I am overall very satisfied with this system. It does what I expect it to do and it does it well.
As far as cleaning goes, it's not as hard as everyone makes it out to be. Use your brain. If you leave it with water in it and you don't clean it after every use, guess what.... it's going to suck. If you take care of your gear it will take care of you.
Final say:
I will buy this again when I need to replace.

bra4942552 at on 05/21/2012

Best bladder

I have tried nalgeen, MSR, and camelback bladders and this one is the best. Since the hose comes out of the bottom it does not protrude into your back as some others do. Also since the hose connection is at the bottom it makes draining this thing super easy. Just detach the hose blow a little air in it to maintain shape and let gravity pull all the water drops out. Not to mention it is about the cheapest of the bladders, and more importantly THE LIGHTEST that I have found. It is simply the best.
Eric K at Mountain Gear on 06/06/2010

First, I love the design, no lid that is, at times, impossible to open...super light, and bite valve DOES NOT LEAK, which is the reason I changed brands of bladders. Second, I didn't clean it after first use, and did have some pretty serious stink and nasty taste to it. I then cleaned it, using only soap and water, and put it in the freezer to store it, then next time I used it...NO STINK!!
So take care of it properly, and it is a terrific hydration system, miles above the other leading brand...

agirard82025616 at on 03/09/2013

Bought this for a trip to Yosemite NP. Did both the Half Dome hike and Mt Conness. Worked really well for the whole trip. Really glad I bought an extra cap. Made it easy to switch between this and my other two Platypus bottles without having to re-thread the tube through my pack. Only problem I had was that screwing on the hose too tight made it leak. Just had to test it by giving it a good squeeze to check for leaks and tighten or loosen accordingly.

Spurg1 at on 09/01/2011

I was aprehensive buying a Pltypus and bought this expecting it to break or leak after a short while. Lets be honest, they feel "cheap." I have used this many times and it has never done me wrong. Would highly recommend this for your backpacking bladder needs. Also, I like putting it upside down from what the picture shows so the cap is on top. It still works that way and runs less risk of leaking all over everything (only works for the 2L, not the 3L).

Brian at on 09/04/2012

I've used this bladder for a year now in every season under every condition. It's price is relatively low when compared to similar products however the bladder's quality isn't compromised. It's tough, easy to clean and dries quickly allowing for funk free taste every time. I like the hard plastic loop at the top of the bladder. It comes in handy for storage or camp use. I would recommend it to friends and would buy another Platypus product from my experiences with this one.

sam3407706 at on 04/20/2012

I like it so far. Some times you feel like your sucking a tad too much air. But i have never owned another bladder so... Water tight seal so far, and I like it.

alfp613587 at on 08/17/2013

This bladder is simple, effective, and priced correctly. Its simplicity cuts ounces compared to other versions on the market. They don't last forever, but I've enjoyed using this product on all of my hikes.

Scott Nielsen at on 12/02/2012

This is the only water resevoir I will ever buy. I seriously love this thing. it can take a beating and you don't get a whole bunch of unidentified growing bacteria in your water.

Matt at on 12/29/2011

Negative Reviews:

In the early days, the 2 liter Hoser had a flat bottom so you could conveniently set it on its base for filling (like the platy bottles have). This was a positive feature which reviewers liked. The newer version of the Hoser has the ridiculous new "floppy tab" bottom (I am guessing it is cheaper to make) and now they will not sit stably on the ground for filling. This is a massive design flaw, which I have brought to CD's attention in the past, but it's being ignored. They need to bring back a Hoser with a flat base (like the bottles), or I will have to switch brands. Too bad, because everything else on this product is good.

etdp608414 at on 07/14/2013

I purchased the 2L and used it several time with 1 liter. Put 2L in it and 150 feet out of my car going into Congaree NP in started leaking. Unpacked my GG Crown VC60 and found that the lower corner of the hole that you hang it by had pulled apart. Had to hand carry it 6 miles to camp. Not sure if I'll try another, truly liked it.

Ronald Bigbie at on 12/27/2012

Neutral Reviews:

These do their job well, but cleaning them after you get home isn't the easiest. I prefer to rinse out or scrub a wide mouthed Nalgene. Having to take the time to scrub it with a long, awkward brush, and/or use a few drops of bleach... its not worth it to me. But that's personal preference. If you like sipping on the go then the bit of maintenance might be worth it for you.
I've never personally had one of these leak or burst, since I only owned one for a few days, but I have seen them critically fail at bad times for other folks. It was personally enough for me to not ever be interested in taking a chance with them.
Also, if you like a nice hot water bottle in your bag on a cold night... forget it with these. They won't handle the heat, and I wouldn't trust one of these in my down bag any more than a mountain lion.

Banning Lyon at on 03/12/2012

Pretty straightforward bladder, but lacks versatility or frills. I personally didn't like the small opening and screw-off lid, it made rinsing and filling a much more deliberate task.

Mike at on 01/31/2012