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Trek 500 Trekking Water Bladder 3L

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Regular price Regular price: $39.00 Sale price Regular price:

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A photo of the Trek 500 Trekking Water Bladder 3L in use

Trek 500 Trekking Water Bladder 3L
Our mountain trekking team has designed this water bladder for trekkers and hikers who want to drink freely during their trek.

Flexible, practical, low-cost water pouch for hydration without limits (3L).

Ease of use

Mouthpiece with stop/start position, wide opening for easy filling.

Easy maintenance

Sliding strip to open the bladder completely and clean easily.


3 litres, suitable for multi-day treks and long hikes.


Product Reviews

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9 Reviews
Write review Trek 500 Trekking Water Bladder 3L
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Value for money

Value for money

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Dear Jay, thank you for your time in leaving us with a 5-Star rating on our product. We are glad that we managed to delight you with the standards of our product. We really appreciate your loyalty with Decathlon. Please let us know if there is anything else we can improve on in the future. Thank you once again for your time and we hope to serve you again soon!



Easy to use and great size. Fits easily into a backpack

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Not working as intended

Bought this for an offsite, but before I could use it, there was a slit near the bottom and water filled was leaking from it.

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Hello James,

Thank you for taking the time to review our product! We are sorry to hear that this product is unsatisfactory for you. We take reviews and feedback into consideration as we strive to improve our products to cater to sports users! You may wish to come down to any experience stores and seek assistance from our sports advisors with regards to your item and do a exchange :)

We hope this experience will not deter you from shopping with us again! Feel free to browse through our website or our latest Decathlon app and skip the queue to make your purchase :) 

We hope to serve you better next time!


Simple, user friendly, affordable

It was great on a recent hiking trip. The only problem is the weight of the water!

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Have used it once, so far so good. It serves its purpose well. No leak problems.


Hi Bob,

Thank you for taking the time to review our products. We are pleased to hear that this Trek500 Trekking Water Bladder - 3L meets your expectations!

We look forward to more of your reviews and sharing! Plus, the new Decathlon app has been launched and you can now purchase all your favourite sports goods with just a few clicks on your smartphone! Yes, it's now available both in the App store and Google Play Store! Download now and happy shopping!

Thank you for your support and stay safe! :)

Sport on safely!


CSM Digital Leader

So far so good

A friend of mine bought for me a 2L water bladder but it leaked. I was not so keen to buy another one but I gave it a go and bought a 3L one and was not disappointed at all.

Hello Syarifah,

Thank you for taking the time to leave a review on the Trek 500 3L Water Bladder. I am glad that the product serves you well. Do come down to any of our stores (with your friend) to check out the full range and do a 1 for 1 exchange. We hope to see you and your friend soon!
Cheers!Your Smiley Hiker,
Hiking Sports Leader

This product worked very well and is easy to clean. Does take a long time to dry before storing.

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Silver doe

Son doing silver doe and needed to carry water

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Leaks at the mouth piece will return. Wet backpack

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Product information



  • 30% Polyethylene
  • 70% Ethylene Vinyl Acetate


  • 100% Thermoplastic Polyurethane


  • 100% Acrylonitrile Butadiene Styrene

Sliding bar

  • 40% Polyethylene
  • 60% Ethylene Vinyl Acetate

Film/Tube connector

  • 40% Polyethylene
  • 60% Ethylene Vinyl Acetate

Tube/Valve connector

  • 100% Polypropylene

On/Off system

  • 100% Polyethylene


  • 100% Silicon

Directions for use

Use water with a temperature between -20°C and -40°C. Do not use: alcohol, fats (dairy products, oils, etc).In temperatures below 0°C, blow into the hose after use to remove the water in it and reduce the risk of icing in the hose and mouthpiece.If the sound of water sloshing in your bag disturbs you, empty the air in your water bladder by turning it upside down and guiding the air bubbles out while sucking in the air.


Removable strip over wide opening enabling easy filling and cleaning.This strip has eyelets to hang the water bladder in bags with hooks.Mouthpiece with stop/start position (by turning the grey part of the mouthpiece) to avoid water spillage when hiking. To drink, place the mouthpiece in "ON " position then suck while biting down on the mouthpiece.

Care instructions

Clean the bladder and mouthpiece after each use with normal washing-up liquid. You can use the B-TWIN bottle washing kit + drying hanger (code: 631585) particularly if you used a sweet drink. Do not leave the drink in the water bladder more than 24h. Not dishwasher or microwave safe.

First use

Rinse the entire product 3 times with clean water before first use.

Materials and regulations

Our products and materials comply with applicable food contact standards. They contain no Bisphenol A (BPA) in line with the applicable French regulations.

Weight and dimensions

Volume: 3 LitresDimensions: 21 cm x 41 cm, tube 100cmWeight: 119 gramsComes in: 1 L / 2 L / 3L

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