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  • Platypus - Hoser Hydration Bladder - One Color

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  • Platypus - Hoser Hydration Bladder - One Color

Platypus Hoser Hydration Bladder

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    • One Color, 1.8L
      sale $14.97
    • One Color, 2L
      sale $15.57
    • One Color, 3L
      sale $16.17

    56 Reviews


    A BPA-free hydration bladder for your hiking backpack.

    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.
    • Item #CAS0446

    Tech Specs

    ⚠️ WARNING
    Cancer -
    BPA-feee plastic, SlimeGuard treatment
    [1L] 34 oz, [1.8L] 60 oz, [2L] 70 oz, [3L] 100 oz
    Recommended Use
    hiking & camping
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Solid Performer

    • Familiarity: I've put it through the wringer

    Have bought multiple of these bladders for various size packs. This brand has consistent high quality bags, no issues for me. Recommend cleaning and drying them as soon as you get home, so no funk builds up in the bag.

    Simple Design

    • Familiarity: I've used it several times

    Really glad that I picked up this Platypus bladder for my Grand Canyon trail run back in November! The 2L is a great choice for shorter hikes, or if you know you'll have water supply along the way. I typically recommend at least 3L on day hikes, but it's nice to have the different size options if you want to save weight. It was very easy to fill this bladder, and I loved that the nozzle is attached to the actual bottom of the bag so gravity gets you every single drop. The material feels like it would be flimsy, but I have had no concerns about it leaking or breaking even while running down some very rough terrain.

    No leaks!

    • Familiarity: I've used it several times

    Yay! I love this thing! It's a bladder. It holds water. Not sure what to say ...uhhh the blue hose matches my bag? It doesn't leak which is fantastic and I love the attached clip for my bag

    Stayed sealed, easy to use, hard to fill

    • Familiarity: I've used it several times

    I'm not sure what I'll do when I need to clean it, but it worked well for an extra bladder in a pack that didn't come with one. Didn't leak and flowed fine.

    Big fan

      I’m a big fan of the platypus bottles. They’re lightweight, pack small, and I’ve had great luck with mine being very durable. I just recently picked up the 2L to stick in my bike frame back for bikepacking trips. It works great! All my others are going on several years of use, from the office to the Wind Rivers.

      What's up with this thing?

      • Familiarity: I've used it several times

      Not sure if it's hit or miss whether you get a leaky one or not but mine leaks every time. I was excited about this because it is larger than my other bladders, and I keep trying it over and over, but it always leaks. Not a fan of a non-locking bite valve either. Always get water everywhere while trying to feed it out of backpacks.

      great bladder

      • Familiarity: I've used it several times

      I bought the 3 Liter bladder for my pack and its been a go to on any trip. It has an easy squeeze mouth piece and has a nice clip feature that easily clips to my pack straps so I don't have to go searching for the hose.

      Super thin

      • Familiarity: I returned this product before using it

      Returned this before using it, because the material was so thin. I've had hydration bladders leak before, and I didn't want to take the risk with something that felt like glorified plastic wrap.

      Great for water filter use

        this thing works perfect for filling from a water filter. Just attach a quck disconnect or take off the mouth piece and attach filter, pump, drain, or squeeze (depending on filter) the water in until full. I chose a setup that saved me both weight and money, here it is.

        Platypus Big lip 2L (filter bag/dirty water)
        Sawyer mini water filter
        Platypus Hoser 2L (clean water)

        Total cost $80
        Total weight 11.1oz less if you take out the extras for filter

        I fully trust in platypus's systems and warranty, as well as these reviews which seem accurate. All great reviews besides a couple people that got a defect and can easily swap out for a working one, or exchange it right here on backcountry because there awesome too!!

        My Go To bladder

        • Familiarity: I've put it through the wringer

        I have this in the 2L for my trail run pack and a 3L for my hiking daypack and it has never let me down. Easy to use, light, easy to clean, and the hose works well. Have never had any leaks and fits in all packs I have put it in.

        Faulty when delivered

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

        This bag split open along the side the first time I attempted to fill it. It appears that the seam wasn't properly bonded when manufactured.

        I like it.

          I bought 2 of theses for a 2 day hike. Both worked well. no leaks, no problems. hose is a nice length, not too short not too long. No frills here, just a basic water sack, which is really all you need.

          Hydration is a Full Time Job

          • Familiarity: I've put it through the wringer

          I live in the desert and I'm super active. Not easy to keep up with hydration. I fill this every night and keep it by my head, because if I don't even have to sit up I will actually drink when I wake up thirsty. I also carry it every time I hike somewhere short just to catch up with hydration. Great when driving long bumpy dirt roads too....

          Unanswered Question

          Can anyone tell me which is the best way to clean one of these, please.

          What are the dimensions of the bladders?...

          What are the dimensions of the bladders?

          I'm surprised this information is not listed.

          Best Answer

          Hey Griegor

          Thank you for your question! I found the information below from Platypus's product specs on their webpage.

          1 Liter: 5.25" x 11.5"-- (13.5 x 29 cm)

          1.8 Liter: 6.75" x 11.5" -- (17 x 29 cm)

          2 Liter: 6" x 16" -- (15 x 40.5 cm)

          3 Liter: 7"x 16.5" -- (18 x 42 cm)

          I woule like to know the dimensions of...

          I woule like to know the dimensions of each

          What size is this bladder? 3 litres?

          What size is this bladder? 3 litres?

          Oops - Just found out - one more click & I found sizes & prices - thanks! I have the 2 litre one and love it - but it ain't big enough for a day hike in the ozzie tropical rainforest where i live so want a 3 litre one also. Thanks.

          Unanswered Question

          Will the 2 L model work with a Black Diamond...

          Will the 2 L model work with a Black Diamond Magnum Pack, or should I just go with a Camelback combo? I don't want anything too large.

          Anyone know the weight (without the hose)...

          Anyone know the weight (without the hose) of the 3L? If someone could post weights it would be pretty awesome and you would be my hero.

          I am wondering what size the fitting on...

          I am wondering what size the fitting on the bag that attaches to the it like a 1/2'' male threaded fitting? I am looking to use it for not the typical usage and I think it would work well if I can easily attach and detach it.

          My puppy got ahold of my 2 liter platypus...

          My puppy got ahold of my 2 liter platypus bladder. Can I replace just the bladder - I don't need the other parts? Thanks.

          I have a platypus bladder and it is now...

          I have a platypus bladder and it is now leaking. How do I go about getting it warrantied? I am in australia but bought my bladder in canada. Any advice?

          Best Answer

          I'd start out by trying to find a local dealer, they should be able to help you out. If that doesn't work, contact Cascade Designs directly. you can isolate the leak, Platypus has a patch kit, if you can find it, that seals most small leaks. It could be a temporary fix until you work out the warranty details.