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Trail Running 1L Water Bladder - blue

Sale price: 3.000 KD Regular price:
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Size: Select a size
Sale price: 3.000 KD Regular price:
Model: 8393577

Product Features

A photo of the Trail Running 1L Water Bladder - blue in use

Trail Running 1L Water Bladder - blue : Our team of trail running enthusiasts designed this 1L water bladder for drinking comfortably during your short and middle-distance trail runs.

Save time at the drink stations! Thanks to its wide opening, the water bladder is easy to fill and close. And with its 1L capacity, it provides up to 2 hours of trail running time.


Enjoy 2 hours of running time thanks to the 1L capacity of the water bladder.

Easy maintenance

Easily fill and clean the bladder using the slide-top opening.

Easy hydration

The water bladder won't leak thanks to the On/Off closure of the bite valve.

Mouth comfort

Run comfortably with the accessible silicone bite valve for mouth comfort.

Product Reviews

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561 reviews

Trail Running 1L Water Bladder - blue
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Perfect water bladder!.

The same as the soft flasks, used as a quick replacement on long runs for my wife's Decathlon Kalenji running vest, perfect. MJS

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Leaked 1km into half marathon......

Used six times and the seventh on a half marathon. Leak started 1km in where hose connects to bag. Was soaked and then by 9km had no water left to hydrate. Shorts and back uncomfortable and water ran into trainers making it an awful run. Will return and see what they say.

Hi Paul,

We are really sorry to hear this. It seems like a potential defect on the whose. So please, feel free to visit your local store and speak to our Running experts. They will be happy to advice you and replace it if needed.


Running Leader

Regards, Federico, Store Manager Decathlon Crawley

Broke after about 10 runs

At km12 of a long run I found myself soaked in water. A little hole in the bladder near the connection between tube and bladder. No idea how it happened but apparently I am not the only one

Hi Simone,

I am really sorry about you bad experince with our Water bladder.

Please return the product in any of Decathlon store and exchange it for new or just take the refund.

I will make sure that this negative feedback will reach the product manager,and he will be aware of this problem.

We will try to improve this product in the future for sure.

Thank you again for your feedback and please let me know if I can help you more regarding this or any other Kalenji products.

Best regards,

Igor Vojnic Zelic

UK Kalenji product trainer


Second one, first one sprung a leak

The first one sprung a leak after about a year of fairly regular use. There is an obvious weak point where the tube enters the bag, and I expect its a pretty common failure. Lets see how I get on with this one.

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A new concept in a seal.. Perfect for a cycle - backsac

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Leaking Bladder

My bladder also started to leak after only around 5 uses. It is between the tube and the bladder.

Hi Claire,

We are extremely sorry for your bad experience with our water bladder,but please make the effort and replace the product with a new one in any of Decathlon stores,or just take a refund.

I will make sure that your feedback will be passed to the product manager for this product,and we will try to do our best to improve this product.

Please let me know if I can help you more with this or anything else regarding Kalenji products.

Best regards,

Igor Vojnic Zelic

UK Kalenji product trainer


Bladder Split

I had the same issue as other reviewers. Split between bag and tube. Very unpleasant 5 miles home with soaked back and shorts.

Dear Malcolm,

I am really sorry to hear this from you.Usually we don't have many bad reviews about our hydratation bags and in your case it must be a production error with the blader.Please feel free to return the product in the store and to exchange for the new bag.

I will forward this feedback to the product manager for sure,just to keep an eye on this.If this is an often issue then we will take some action.

Thank you,

Best regards,

UK Kalenji running product trainer
Igor Vojnic

My bladder burst

The bladder works fine, but it started falling apart after 10 runs where the tube connects to the bladder.

Hi Mr.Daniel,

I am really sorry to hear that from you about this product,usually this is not the case.Please fill free to return the product in any of Decathlon store and exchange for the new or get the refund.
I think there is maybe a production error,so if you exchange the baldder for new in our stores it should be fine.
I will inform the brand and the production manager about this.

Thank you,

Ideal Replacement

Rules stated I had to have the means to carry 1ltre of fluids and this was perfect for that. Easy to fill, empty and clean

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Running bag bladder

Very economical refills. Have to change every 6-8 weeks so works out well.

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Great price and the bladder lasted just under two years till a small tear appeared at the bottom, however I was able to exchange it for a new one, that’s what I love about Decathlon.

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Total all is good

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Hello Michael,

Thank you for supporting Decathlon Hong Kong. Your rating and feedback is appreciated.

We are happy to hear that you have had a satisfied product experience.

Stay safe and healthy!

Gladys Suen

Decathlon Hong Kong Running Team

water leak problem

back and forth i owned 4 of these because if its low price and i prefer to have 2 for alternating use, all had water leak problem within 1-2 months first one: water leak, replaced with second one second & 3rd one: water leak, decided to throw away bought the 4th one since i needed it urgently, same issue. considering to get some other brand to reduce waste...

Hi Thomas,

Thanks for sharing your experience with this water bladder. I'm really sorry to hear that you have encountered a repeated leaking on 4 different models. I totally understand your frustration. 

I personally use one of these water bladders in my hydration bag and I never encountered any leaking. There might be a defect on some of these water bladders - your feedback is highly valuable. I will highlight this to Antoine, our offer & supply leader in charge of trail running so he can dig into this matter. 

I would recommend you to visit your preferred store for a return & exchange. Please approach our team. Our sports leaders in charge of trail running will study the leaking one and they will happily proceed for an exchange. 

I hope you can enjoy running with the new water bladder very soon,

Thank you again for sharing this issue,

Camille, trail-running aholic
Kalenji 1 liter trail running bladder

1 liter is just nice for middle distance runner like me. I find it fits my small north face Martin wing just right.

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Hi Jin Hwee,

Thanks for you recommendation! We're glad that our product fits you running vest of choice. As our water Bladders are made to fit in our Decathlon running vests, we can't say for sure that they might fit into the vests of other brands so it's a good idea to bring you vest down to see it they actually fit. 
Yes, 1 litre is a good volume for a mid range distance run. If however you find that you need a little more due to hot weather, you can consider getting out Soft Flasks that come in 150ml, 250ml and 500ml volumes. 

Your Friendly Neighbourhood Jogger,
Náročné sání

I když je sací ventilek na pozici ON a je zuby stisknut, je pití relativně náročené. Při běhu nekonfortní. Samože může být problém jen s tímto kusem.

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Additional Product informations



  • 30% Polyethylene
  • 70% Ethylene Vinyl Acetate


  • 100% Thermoplastic Polyurethane


  • 100% Acrylonitrile Butadiene Styrene

Sliding bar

  • 30% Polyethylene
  • 70% Ethylene Vinyl Acetate

Film/Tube connector

  • 30% Polyethylene
  • 70% Ethylene Vinyl Acetate

Tube/Valve connector

  • 100% Polypropylene

On/Off system

  • 100% Polypropylene


  • 100% Silicon

A water bladder designed for replenishing your water supply during trail runs.

With its 1L capacity, your water bladder will give you 2 hours of running time on average. Indeed it is often the minimum volume required during trail running competitions.And thanks to its wide open, you can quickly fill it at the drink stations. When closing it, you should feel the slide-top clip into place to ensure a perfect seal. Finally, your water bladder is compatible with the 5L, 10L and 15L trail running bags.

A tube and an adjustable bite valve for superior comfort.

You can easily cut the tube of the water bladder to your preferred length!To do this, remove the bite valve, put the tube in some hot water to soften it, cut it to the required length and replace the bite valve.The bite valve has an on/off closure system to prevent leaks during transportation. When running, it does not leak, even when it is in the open position. In order to get a good flow rate when you drink, pinch the bite valve with your mouth and suck!

Composition, dimensions and maintenance of your water bladder:

The components of your water bladder are guaranteed to be free of BPA (Bisphenol A) in accordance with current French regulations.It is 31 x 16cm in size with a 100cm tube.To prolong the lifetime of your water bladder, do not fold it, do not fill it with hot liquids and do not carry it upside down or by the tube ;)

How to empty the air from your water bladder

To avoid hearing the noise of the water splashing about in the pouch while you are running, make sure you empty out all the air before starting!Just hold your water bladder upside down after filling it, guide the air bubbles towards the tube opening and suck them out. That's all there is to it. Now you can enjoy the silence while you run!

Some tips for cleaning your water bladder:

To avoid any taste of plastic when you drink, rinse your water bladder 3 times before using it for the first time.Whenever you clean your water bladder, remember to dry it thoroughly by leaving it open.If the taste of plastic persists, put your dry water bladder in the freezer overnight.

How do we test a water bladder?

To guarantee the quality of the 1L water bladder, our design team asked 12 runners to use it during a running session on a treadmill.Because it is much more easygoing than trail running, running on a treadmill gives you the opportunity to concentrate on the flow rate of the bite valve, the movements of the water bladder and the user comfort. With the help of the feedback provided by our testers, we designed a product for trail running.

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