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Description

Easy to remove, clean, and use.

A quick-disconnect fit on the end of the Platypus Big Zip LP Hydration Bladder's drink tube means you can easily remove the water reservoir from your pack without re-routing the drink tube, while the SlideLock closure prevents the wrist-tweaking that usually accompanies threaded closures. Platypus made this bladder with BPA-free material and added a SlimeGuard antimicrobial treatment to the inside. An angled shutoff valve helps prevent leaking after you take a swig.

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Platypus Big Zip LP Hydration Bladder

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Here's what others have to say...

5 5

Big Zip? Genius!

  • Familiarity: I've used it several times

Why hasn't anyone thought of this? This is the only kind of bladder I would spend money on. The function is amazing. Tip it upside down when you first fill up and you will see. Easy to put in ice if you are going out for the day and want to keep cold. And as far as cleaning goes it couldn't be much easier. I leave mine in the freezer when im not using it so as to keep it as clean as possible so that the moisture wont get the bladder clean.

4 5

Great Taste

  • Familiarity: I've used it several times

No taste of plastic like my old water bladder.
Convenient access to my water.
I even fell backwards onto my pack with a full bladder and no leaks with the sudden impact.

5 5

I'm glad I bought it!

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

I've only had the Platypus Big Zip 2L for a short time, but so far I'm very happy I bought it. I always thought hydration bladders would make the water taste like plastic. But, I see more and more hikers using them so I decided to try it. The bag seals great and there is no plastic taste to the water.

5 5

Top of the line

  • Familiarity: I've put it through the wringer

For the longest time, I refused to use a hydration bladder: I thought water bottles were better. Big mistake!
I finally started using them, and what a difference!
I tried other brands, mainly Camelback and Osprey, but the Platypus Big Zip is a super duper beyond perfect hydration system.
I use the 2 Liter in my Deuter ACT Trail 28 SL, which the pack I use to work in camp.
I use the 3 Liter in my Osprey Kestrel 32, which is the pack I use for psycho brutal insane day hikes or I use the 3 Liter in my Osprey Kestrel 58 multi day trips.
The pouch itself is puncture resistant. It has a wide industrial strength zip lock mouth that is very easy to fill or clean, and a "tool" (for lack of a better word) that secures the zip shut and prevents leaks.
The low and narrow profile makes it a breeze to slide into the pack.
I absolutely love the quick disconnect, it's easy, secure and convenient.
And the bite valve is awesome because it allows more flows than the other bladders I've tried. It has a shut off setting to prevent leaks when you're not using it.
I can find absolutely nothing wrong with this one.
Some find the bite valve tough to use, I don't: I think it's an angle thing, you just need to familiarize yourself with it.
I have taken it hiking, backpacking, I have worked in camp with it, I have dropped it, kicked it, sat on it, slept on it when using my pack as a pillow, I have never ever had an issue with it.
No leaks, no punctures, no problems.

5 5

Great bladder

  • Familiarity: I've put it through the wringer

I have had the 2L for at least two or three years now and no issues at all. Bag seals great, hose is perfect length and mouth piece works pretty good. Take a little harder biting than other bags that I have used, but that does not really bother me.
Easy to clean, and easy to pack.

3 5

not fun when your pack and you are wet

  • Familiarity: I've used it several times

well... I not my favorite. I would not say that this is a bad bag, I like how it closes it makes it easy for cleaning and filling. however I have had this bag leak more then once and get my pack soaked. I always keep my items in my pack in dry sacks so they have always been safe but it still does not help the pack being wet and weighing it down and then that getting your pants wet... never fun.

5 5

You can lead a horse to water...

  • Familiarity: I've put it through the wringer

Much better design than the first mover in this category. Doesn't leak like hump day and the mouth piece is just plain better.

5 5


Awesome bladder

  • Familiarity: I've put it through the wringer

Easy to clean, works, just make sure you put it in right side up! :)

5 5

The only hydration bladder to own

  • Familiarity: I've put it through the wringer

The simple top makes sealing the bladder a breeze. Never have had this bladder leak. No matter what I've done to it. Even when packing a bear canister and cramming my pack so there is no available room and putting much pressure on the bladder. The wide opening makes for easy cleaning as does the fact it comes apart easy. I've had cheap bladders, I've had one by the major competitor and nothing is as simple to use and clean as this.

what are the dimensions of these bladders?

Best Answer Responded on

Hey Heather,
Here are the dimensions
2.0 L - 7in x 18.5in/weight 5.5 ounces
3.0 L - 7.75in x 18.75in/weight 5.8 ounces
If you have any more questions about this bladder or any other gear, please give me a call at 1-800-409-4502 ext 4446 or email at gconner@backcountry.com

5 5

GOAT IS GOOD

Got a couple nasty/rank camelback bladders that I didn?t care for properly and needed replacing. I have a geigerrig that is in good shape but I wanted a bigger bladder for a recent desert bikepack trip where I needed to carry a couple days worth of water before we could resupply. So I supplemented the 4L reservoir from the Platy Gravity filter I had with this 3L bladder. Holds water?can reach in easily to clean it out if needed (or wedge something in there to help it dry). Its lightweight for transporting when empty (lets face it, water is about the heaviest thing you?re going to carry when doing anything in the backcountry). Something of note for very specific needs---oversizing the bladder with a little less than its capacity in water lets you bend/fold/shape the bladder into some funky places. At different times over three days, the 3L and 4L both spent some time in my bike frame bag conforming to the triangle shape and around bike tubes and tools and a stove? Kept the excess water weight off my back, helped lower the center of gravity and held up (no leaks or punctures) even with all off road mileage including bouncing up and down some big elevation changes at speed.

5 5

Awesome!

  • Familiarity: I've used it several times

Doesn't leak! Very good quality and easy to fill up.

Can anyone comment on the flow from the...

Can anyone comment on the flow from the valves between the Platypus and Deuter bladders? I have the UltraSpire bladder, which has great flow, but doesn't maintain pressure, so each time you want to drink you have to suck all the air out first. Terrible design, especially for runners.

Best Answer Responded on

The flow is great and it's easy to suck water. I don't recall having to suck any air at all. I've never used the Deuter bladder.

may I ask what is the advantage of this...

may I ask what is the advantage of this type of system over a normal water bottle or canteen??just curious..I mean water in your pack equals wet gear and clothing does it not??Im not new to packing,just to all these new gadgets...

Best Answer Responded on

A few advantages:

-- lighter weight to hold a larger volume of water

-- The flat nature of the bladder is easier to pack and, when empty, takes up almost no volume in a pack (unlike a bottle)

-- most packs hold these bladders at the ideal location for heavy gear (mid/high, centered, close to the back)

-- the tube makes it easier to hydrate while moving. ("handsfree")

-- The larger volume makes it easier when filtering/purifying water

-- I like to hang mine up on a tree in camp, at which point it becomes a gravity-fed "faucet" for anything I need.

All that said, I usually carry a bladder AND a 16oz insulated bottle. That gives me the versatility I like for drinking like a normal human, hot liquids, sharing, and my bottle serves as a tiny bear canister to store a midnight snack.

Responded on

I just want to add that most packs these days have a hydration sleeve to keep your bladder separate from the rest of your gear and the only way your gear is going to get wet is if you puncture the bladder which has never happened to me or anybody that I know personally.

Responded on

David and Wayne highlight great points. Weight is key, and this system is pretty light, even for a bladder. I personally own this system, and it does NOT leak (if used properly, of course). It even has a disconnect between the hose and bladder that allow you to remove/attach a full bladder with little (<1 tsp) to no water loss. I fully trust this bladder to keep everything dry.

Responded on

its light and you can fit a lot of water in a small area. however you are right it does suck when it leaks and every once in awhile that does happen, and I have had it happen more often with this bag then I have with other bags. however it is always a good idea to keep anything that you don't want to get wet in a dry stuff sack.

5 5

It is GREAT! Just BUY IT!

  • Familiarity: I've put it through the wringer

Well made, and very heavy duty! Cascade Designs has the most liberal lifetime warranty ever! (Yes, I had to send it in after it got a pin prick in it, was "field repaired with a hot knife and a piece cut from the top corner material. They sent me a new one-no questions asked.) The large opening is great and I LOVE the detachable hose, because it has a valved connection so you can leave it off with it full. (The non-Zip model is cheaper but doesn't have this.) Very versatile. Just plain good stuff!

5 5

I wouldn't use anything else.

  • Familiarity: I've put it through the wringer

I've used a few different reservoirs in the past and this is by far my favorite. The big opening makes it really easy to clean out when you need to. The bite valve is sturdy and drip free. I love the quick disconnect hose, it makes it super easy to get in and out of my packs without messing with the hose. The quick disconnect parts are also compatible with my Katadyn Hiker Pro filter. I have had mine for about 3 years and it is still going strong.

5 5

Reliable and a Must-Have!

  • Familiarity: I've put it through the wringer

Have had the Bladder for the last year and have used it, on average, 1-2X per Week. I have the 3L Bladder and find that it's the perfect size for longer day-hikes and overnights. Super sleek-profile. Solid hose to bag attachment. Mouthpiece has never given me problems - even has a lock so it doesn't leak while you're on the move. I bought this one in particular because of how easy it was to clean - which is super important for an an investment such as this one. I just bought the insulation for it - can't wait to use it this winter without it freezing up!

5 5

Solid

  • Familiarity: I've put it through the wringer

I've been using the same one for a couple of years now in hot and cold conditions with no issues. I previously used the Camelbak Antidote and went through several due to leaks before realizing that it just wasn't going to work. A friend suggested the Platypus so I got one and never looked back. Even under the pressure of a fully loaded 70L pack, never a drop out of place. It's super easy to fill and clean and the mouthpiece is much more user friendly than the CamelBak (more water volume, more durable, and more comfortable). Stop reading and get one already!

2 5

Not my favorite

  • Familiarity: I've put it through the wringer

This bladder let me down. It has some cool features. The big zip on top is awesome and makes it easy to fill. But I bought 2 of these bladders and they both started leaking out of the hose connection at the bottom of the bladder. Halfway through my hikes my whole pack and back would be soaked and I would be out .5 a liter.

Responded on

That's a bummer. This happened to me only once, a few weeks ago. It seems to be an isolated incident...Probably user-error on my part though. Set it up real early in the AM, before the coffee..

5 5

The BEST bladder

  • Familiarity: I've put it through the wringer

The Platypus Big Zip's top makes this the easiest to clean bladder on the market. When it starts to get funky (which it really hasn't up to this point, and not because I have taken good care of it), you can just scrub it out with one of those dishwashing sponges with a handle, and it becomes as good as new again.