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Mountain Biking 6L/2L Hydration Backpack ST 520

Sale price: Dhs. 160.00 Regular price:
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Sale price: Dhs. 160.00 Regular price:
Model: 8530057

Product Features

Mountain Biking 6L/2L Hydration Backpack ST 520 : This hydration backpack is designed to keep you easily hydrated when mountain bike touring for less than 3 hours.

This 6L mountain biking hydration backpack is light and compact. It comes with a 2L water bladder. Its numerous pockets separate your belongings. Very practical: helmet hook and multitool pocket!

A photo of the Mountain Biking 6L/2L Hydration Backpack ST 520 in use


6L of bag space and a 2L water bladder: stay hydrated for 2 hours on your bike!

Multiple compartments

1 large pocket, 1 multitool pocket, 1 water bladder, 1 stretchy outer pocket.


Adjustable straps and harness system for maximum freedom of movement.

Carrying comfort

Back with micro-perforated foam and mesh shoulder straps for better ventilation.

Ease of use

Multitool pocket that's accessible without taking your bag off: very practical


VIOO CLIP light attachment point on the back

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Product Reviews

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652 reviews

Mountain Biking 6L/2L Hydration Backpack ST 520
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Strange Hydration opening location

Just purchased... The clip for the tube is on the opposite side where the tube comes out the top meaning the tube goes from 1 side of the back of your head to other side... Odd design... Disappointing as everything else great

Hydration bag

I was looking for a smallish backpack for mountain biking which still had a 2l hydration bladder. This is perfect, fits everything I need for a ride and keeps me hydrated. I like how the chest strap can be moved up or down to suit the size of the person wearing it. It has been used loads and everything has been kept dry inside when I've been caught in a rain shower. Great bag.

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Perfect hydration pack for hitting the trails

Easy to use and plenty of space for extra layers and essential tools. Handy clips for your helmet and rear light as well.

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Great size

Great size perfect for a bike ride is lightweight

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Great small backpack

Got this backpack for a all day ride on the trails held what I need for the day two spare tubes couple energy bars and gel and small tools. All with 2L of water to. Still had space for windproof and arm warmers in outside pocket. Oh and two little pockets that can be handy for gel or small bars. There's no waist strap but didn't feel the need for it as backpack feels good and stayed put even with some jumps and drops in the trails.

First delve into hydration pack

Pack is pretty decent but its a shame the drinking tube just comes out a zipped part on top of bag rather than discreetly into one of the straps.

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Works well

Works as it should

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This Hydration Backpack Is Awesome.

This is my second purchase from Decathlon and i must say I'm delighted by their product and it's quality. The price simply justifies the quality they offer, and not to forget the style and colour it's always been eye appealing. One improvement i would suggest is to add 1 elastic strip on both sides of the shoulder sling, which will hold the pipe in it's place when passed through it and it won't move from its position, less pipe dangling, it will also look tidy.

Must Go Hydration Bag For Cyclists And Bikers

This bag is one of my favourite amongst all other hydration bags available. The quality is just amazing, offcourse it's a product choosen by Decathlon after all. This bag can take 4L of cargo amd 2L of liquid. Must go product for people who are looking into this catagory.

Great product. Take this size instead of small one

Size is just perfect for me. Take this size instead of the smaller size. Build quality is really good.


Good product but the capacity seems less


Ordered this solely for long distance BRMs, and this hydration bag has kept me hydrated all the time. No complaints whatsoever, aesthetically pleasing as well and I was also able to put all my tools, pump and snacks into this. Great buy, great price.

Hydration bag

I used for 600KM motorcycle ride. It serves it purpose, but if they have cap/cover for nozzle it make sense.

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Nice product

Every cyclist must buy

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Loving It!

Great backpack which solves many needs in a go. Water, Snack, Tools etc.

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Additional Product informations


Main fabric

  • 100% Polyester


  • 100% Polyester

Water pouch

  • 50% Polyamide
  • 50% Styrene Ethylene Butadiene Styrene

Take everything you need easily!

This mountain biking hydration backpack has been designed for keeping your belongings in separate pockets.Main bag space:- phone pocket- straps for your pump- tyre lever and inner tube pocket- pocket for a compact rainproof jacket- pocket for keys, cash and cardsOn the straps:- 2 small net pockets for cereal barsThe 2L water bladder goes in a separate compartment. The tube comes out on the top of the bag.

Plenty of details for less effort

We have designed a bag that makes life easier:- Your water bladder's tube can be clipped into place to keep it near your mouth.- The large net pocket on the back means you can grab your rainproof jacket in an instant.- The multitool pocket at the bottom lets you access it without taking your backpack off. You can reach all of your belongings with just one hand.- The main pocket's zip can be opened without taking off your full-finger MTB gloves.

What about the water bladder?

Your bag is supplied with a 2-litre water bladder.It is suitable for temperatures between -20 and +40°C, and is for water only. It is not suitable for milk or alcohol and should not be put in a microwave.If necessary, you can cut the tube to your preferred length.After each outing, rinse and dry the water bladder.To make it easier, use the cleaning kit which contains a bottle brush and a drying hanger.


To keep your hands free and let you carry your helmet, this bag has a helmet hook on the front.It's compatible with the Rockrider ST500 helmet but can also be used for other models with the right type of vents.

Maximum comfort and ventilation!

This backpack is equipped with 3D foam and mesh for excellent ventilation and to stop your back feeling damp.The mesh straps are very comfortable.They are held by a chest strap that allows you to adjust the bag to your body.


This hydration backpack comes with a clip for attaching a VIOOCLIP light.There is also a choice of 4 colours for different levels of visibility.

Maintenance tips:

For hygiene reasons, we recommend cleaning your water bladder after each use.To help you clean out the tube, you can order a special brush using product ref. 5935596.This kit comes with a hanger to make it easier to dry out the inside of the bladder.Tip: If you don't want your drink to taste like plastic, wash the bladder, dry it well, and place it in your freezer.Take it out a few hours before your ride. This will stop any flavour transfer.

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